| ... | ... | @@ -334,7 +334,7 @@ pub fn PriorityDequeue(comptime T: type) type { |
| 334 | 334 | } |
| 335 | 335 | } |
| 336 | 336 | |
| 337 | | /// Return the number of elements remaining in the heap |
| 337 | /// Return the number of elements remaining in the dequeue |
| 338 | 338 | pub fn count(self: Self) usize { |
| 339 | 339 | return self.len; |
| 340 | 340 | } |
| ... | ... | @@ -345,7 +345,7 @@ pub fn PriorityDequeue(comptime T: type) type { |
| 345 | 345 | return self.items.len; |
| 346 | 346 | } |
| 347 | 347 | |
| 348 | | /// Heap takes ownership of the passed in slice. The slice must have been |
| 348 | /// Dequeue takes ownership of the passed in slice. The slice must have been |
| 349 | 349 | /// allocated with `allocator`. |
| 350 | 350 | /// De-initialize with `deinit`. |
| 351 | 351 | pub fn fromOwnedSlice(allocator: *Allocator, lessThanFn: fn (T, T) bool, items: []T) Self { |
| ... | ... | @@ -395,14 +395,14 @@ pub fn PriorityDequeue(comptime T: type) type { |
| 395 | 395 | } |
| 396 | 396 | |
| 397 | 397 | pub const Iterator = struct { |
| 398 | | heap: *PriorityDequeue(T), |
| 398 | queue: *PriorityDequeue(T), |
| 399 | 399 | count: usize, |
| 400 | 400 | |
| 401 | 401 | pub fn next(it: *Iterator) ?T { |
| 402 | | if (it.count >= it.heap.len) return null; |
| 402 | if (it.count >= it.queue.len) return null; |
| 403 | 403 | const out = it.count; |
| 404 | 404 | it.count += 1; |
| 405 | | return it.heap.items[out]; |
| 405 | return it.queue.items[out]; |
| 406 | 406 | } |
| 407 | 407 | |
| 408 | 408 | pub fn reset(it: *Iterator) void { |
| ... | ... | @@ -410,11 +410,11 @@ pub fn PriorityDequeue(comptime T: type) type { |
| 410 | 410 | } |
| 411 | 411 | }; |
| 412 | 412 | |
| 413 | | /// Return an iterator that walks the heap without consuming |
| 414 | | /// it. Invalidated if the heap is modified. |
| 413 | /// Return an iterator that walks the queue without consuming |
| 414 | /// it. Invalidated if the queue is modified. |
| 415 | 415 | pub fn iterator(self: *Self) Iterator { |
| 416 | 416 | return Iterator{ |
| 417 | | .heap = self, |
| 417 | .queue = self, |
| 418 | 418 | .count = 0, |
| 419 | 419 | }; |
| 420 | 420 | } |
| ... | ... | @@ -457,308 +457,308 @@ fn lessThanComparison(a: u32, b: u32) bool { |
| 457 | 457 | return a < b; |
| 458 | 458 | } |
| 459 | 459 | |
| 460 | | const Heap = PriorityDequeue(u32); |
| 460 | const PDQ = PriorityDequeue(u32); |
| 461 | 461 | |
| 462 | 462 | test "std.PriorityDequeue: add and remove min" { |
| 463 | | var heap = Heap.init(testing.allocator, lessThanComparison); |
| 464 | | defer heap.deinit(); |
| 463 | var queue = PDQ.init(testing.allocator, lessThanComparison); |
| 464 | defer queue.deinit(); |
| 465 | 465 | |
| 466 | | try heap.add(54); |
| 467 | | try heap.add(12); |
| 468 | | try heap.add(7); |
| 469 | | try heap.add(23); |
| 470 | | try heap.add(25); |
| 471 | | try heap.add(13); |
| 466 | try queue.add(54); |
| 467 | try queue.add(12); |
| 468 | try queue.add(7); |
| 469 | try queue.add(23); |
| 470 | try queue.add(25); |
| 471 | try queue.add(13); |
| 472 | 472 | |
| 473 | | expectEqual(@as(u32, 7), heap.removeMin()); |
| 474 | | expectEqual(@as(u32, 12), heap.removeMin()); |
| 475 | | expectEqual(@as(u32, 13), heap.removeMin()); |
| 476 | | expectEqual(@as(u32, 23), heap.removeMin()); |
| 477 | | expectEqual(@as(u32, 25), heap.removeMin()); |
| 478 | | expectEqual(@as(u32, 54), heap.removeMin()); |
| 473 | expectEqual(@as(u32, 7), queue.removeMin()); |
| 474 | expectEqual(@as(u32, 12), queue.removeMin()); |
| 475 | expectEqual(@as(u32, 13), queue.removeMin()); |
| 476 | expectEqual(@as(u32, 23), queue.removeMin()); |
| 477 | expectEqual(@as(u32, 25), queue.removeMin()); |
| 478 | expectEqual(@as(u32, 54), queue.removeMin()); |
| 479 | 479 | } |
| 480 | 480 | |
| 481 | 481 | test "std.PriorityDequeue: add and remove max" { |
| 482 | | var heap = Heap.init(testing.allocator, lessThanComparison); |
| 483 | | defer heap.deinit(); |
| 482 | var queue = PDQ.init(testing.allocator, lessThanComparison); |
| 483 | defer queue.deinit(); |
| 484 | 484 | |
| 485 | | try heap.add(54); |
| 486 | | try heap.add(12); |
| 487 | | try heap.add(7); |
| 488 | | try heap.add(23); |
| 489 | | try heap.add(25); |
| 490 | | try heap.add(13); |
| 485 | try queue.add(54); |
| 486 | try queue.add(12); |
| 487 | try queue.add(7); |
| 488 | try queue.add(23); |
| 489 | try queue.add(25); |
| 490 | try queue.add(13); |
| 491 | 491 | |
| 492 | | expectEqual(@as(u32, 54), heap.removeMax()); |
| 493 | | expectEqual(@as(u32, 25), heap.removeMax()); |
| 494 | | expectEqual(@as(u32, 23), heap.removeMax()); |
| 495 | | expectEqual(@as(u32, 13), heap.removeMax()); |
| 496 | | expectEqual(@as(u32, 12), heap.removeMax()); |
| 497 | | expectEqual(@as(u32, 7), heap.removeMax()); |
| 492 | expectEqual(@as(u32, 54), queue.removeMax()); |
| 493 | expectEqual(@as(u32, 25), queue.removeMax()); |
| 494 | expectEqual(@as(u32, 23), queue.removeMax()); |
| 495 | expectEqual(@as(u32, 13), queue.removeMax()); |
| 496 | expectEqual(@as(u32, 12), queue.removeMax()); |
| 497 | expectEqual(@as(u32, 7), queue.removeMax()); |
| 498 | 498 | } |
| 499 | 499 | |
| 500 | 500 | test "std.PriorityDequeue: add and remove same min" { |
| 501 | | var heap = Heap.init(testing.allocator, lessThanComparison); |
| 502 | | defer heap.deinit(); |
| 501 | var queue = PDQ.init(testing.allocator, lessThanComparison); |
| 502 | defer queue.deinit(); |
| 503 | 503 | |
| 504 | | try heap.add(1); |
| 505 | | try heap.add(1); |
| 506 | | try heap.add(2); |
| 507 | | try heap.add(2); |
| 508 | | try heap.add(1); |
| 509 | | try heap.add(1); |
| 504 | try queue.add(1); |
| 505 | try queue.add(1); |
| 506 | try queue.add(2); |
| 507 | try queue.add(2); |
| 508 | try queue.add(1); |
| 509 | try queue.add(1); |
| 510 | 510 | |
| 511 | | expectEqual(@as(u32, 1), heap.removeMin()); |
| 512 | | expectEqual(@as(u32, 1), heap.removeMin()); |
| 513 | | expectEqual(@as(u32, 1), heap.removeMin()); |
| 514 | | expectEqual(@as(u32, 1), heap.removeMin()); |
| 515 | | expectEqual(@as(u32, 2), heap.removeMin()); |
| 516 | | expectEqual(@as(u32, 2), heap.removeMin()); |
| 511 | expectEqual(@as(u32, 1), queue.removeMin()); |
| 512 | expectEqual(@as(u32, 1), queue.removeMin()); |
| 513 | expectEqual(@as(u32, 1), queue.removeMin()); |
| 514 | expectEqual(@as(u32, 1), queue.removeMin()); |
| 515 | expectEqual(@as(u32, 2), queue.removeMin()); |
| 516 | expectEqual(@as(u32, 2), queue.removeMin()); |
| 517 | 517 | } |
| 518 | 518 | |
| 519 | 519 | test "std.PriorityDequeue: add and remove same max" { |
| 520 | | var heap = Heap.init(testing.allocator, lessThanComparison); |
| 521 | | defer heap.deinit(); |
| 520 | var queue = PDQ.init(testing.allocator, lessThanComparison); |
| 521 | defer queue.deinit(); |
| 522 | 522 | |
| 523 | | try heap.add(1); |
| 524 | | try heap.add(1); |
| 525 | | try heap.add(2); |
| 526 | | try heap.add(2); |
| 527 | | try heap.add(1); |
| 528 | | try heap.add(1); |
| 523 | try queue.add(1); |
| 524 | try queue.add(1); |
| 525 | try queue.add(2); |
| 526 | try queue.add(2); |
| 527 | try queue.add(1); |
| 528 | try queue.add(1); |
| 529 | 529 | |
| 530 | | expectEqual(@as(u32, 2), heap.removeMax()); |
| 531 | | expectEqual(@as(u32, 2), heap.removeMax()); |
| 532 | | expectEqual(@as(u32, 1), heap.removeMax()); |
| 533 | | expectEqual(@as(u32, 1), heap.removeMax()); |
| 534 | | expectEqual(@as(u32, 1), heap.removeMax()); |
| 535 | | expectEqual(@as(u32, 1), heap.removeMax()); |
| 530 | expectEqual(@as(u32, 2), queue.removeMax()); |
| 531 | expectEqual(@as(u32, 2), queue.removeMax()); |
| 532 | expectEqual(@as(u32, 1), queue.removeMax()); |
| 533 | expectEqual(@as(u32, 1), queue.removeMax()); |
| 534 | expectEqual(@as(u32, 1), queue.removeMax()); |
| 535 | expectEqual(@as(u32, 1), queue.removeMax()); |
| 536 | 536 | } |
| 537 | 537 | |
| 538 | 538 | test "std.PriorityDequeue: removeOrNull empty" { |
| 539 | | var heap = Heap.init(testing.allocator, lessThanComparison); |
| 540 | | defer heap.deinit(); |
| 539 | var queue = PDQ.init(testing.allocator, lessThanComparison); |
| 540 | defer queue.deinit(); |
| 541 | 541 | |
| 542 | | expect(heap.removeMinOrNull() == null); |
| 543 | | expect(heap.removeMaxOrNull() == null); |
| 542 | expect(queue.removeMinOrNull() == null); |
| 543 | expect(queue.removeMaxOrNull() == null); |
| 544 | 544 | } |
| 545 | 545 | |
| 546 | 546 | test "std.PriorityDequeue: edge case 3 elements" { |
| 547 | | var heap = Heap.init(testing.allocator, lessThanComparison); |
| 548 | | defer heap.deinit(); |
| 547 | var queue = PDQ.init(testing.allocator, lessThanComparison); |
| 548 | defer queue.deinit(); |
| 549 | 549 | |
| 550 | | try heap.add(9); |
| 551 | | try heap.add(3); |
| 552 | | try heap.add(2); |
| 550 | try queue.add(9); |
| 551 | try queue.add(3); |
| 552 | try queue.add(2); |
| 553 | 553 | |
| 554 | | expectEqual(@as(u32, 2), heap.removeMin()); |
| 555 | | expectEqual(@as(u32, 3), heap.removeMin()); |
| 556 | | expectEqual(@as(u32, 9), heap.removeMin()); |
| 554 | expectEqual(@as(u32, 2), queue.removeMin()); |
| 555 | expectEqual(@as(u32, 3), queue.removeMin()); |
| 556 | expectEqual(@as(u32, 9), queue.removeMin()); |
| 557 | 557 | } |
| 558 | 558 | |
| 559 | 559 | test "std.PriorityDequeue: edge case 3 elements max" { |
| 560 | | var heap = Heap.init(testing.allocator, lessThanComparison); |
| 561 | | defer heap.deinit(); |
| 560 | var queue = PDQ.init(testing.allocator, lessThanComparison); |
| 561 | defer queue.deinit(); |
| 562 | 562 | |
| 563 | | try heap.add(9); |
| 564 | | try heap.add(3); |
| 565 | | try heap.add(2); |
| 563 | try queue.add(9); |
| 564 | try queue.add(3); |
| 565 | try queue.add(2); |
| 566 | 566 | |
| 567 | | expectEqual(@as(u32, 9), heap.removeMax()); |
| 568 | | expectEqual(@as(u32, 3), heap.removeMax()); |
| 569 | | expectEqual(@as(u32, 2), heap.removeMax()); |
| 567 | expectEqual(@as(u32, 9), queue.removeMax()); |
| 568 | expectEqual(@as(u32, 3), queue.removeMax()); |
| 569 | expectEqual(@as(u32, 2), queue.removeMax()); |
| 570 | 570 | } |
| 571 | 571 | |
| 572 | 572 | test "std.PriorityDequeue: peekMin" { |
| 573 | | var heap = Heap.init(testing.allocator, lessThanComparison); |
| 574 | | defer heap.deinit(); |
| 573 | var queue = PDQ.init(testing.allocator, lessThanComparison); |
| 574 | defer queue.deinit(); |
| 575 | 575 | |
| 576 | | expect(heap.peekMin() == null); |
| 576 | expect(queue.peekMin() == null); |
| 577 | 577 | |
| 578 | | try heap.add(9); |
| 579 | | try heap.add(3); |
| 580 | | try heap.add(2); |
| 578 | try queue.add(9); |
| 579 | try queue.add(3); |
| 580 | try queue.add(2); |
| 581 | 581 | |
| 582 | | expect(heap.peekMin().? == 2); |
| 583 | | expect(heap.peekMin().? == 2); |
| 582 | expect(queue.peekMin().? == 2); |
| 583 | expect(queue.peekMin().? == 2); |
| 584 | 584 | } |
| 585 | 585 | |
| 586 | 586 | test "std.PriorityDequeue: peekMax" { |
| 587 | | var heap = Heap.init(testing.allocator, lessThanComparison); |
| 588 | | defer heap.deinit(); |
| 587 | var queue = PDQ.init(testing.allocator, lessThanComparison); |
| 588 | defer queue.deinit(); |
| 589 | 589 | |
| 590 | | expect(heap.peekMin() == null); |
| 590 | expect(queue.peekMin() == null); |
| 591 | 591 | |
| 592 | | try heap.add(9); |
| 593 | | try heap.add(3); |
| 594 | | try heap.add(2); |
| 592 | try queue.add(9); |
| 593 | try queue.add(3); |
| 594 | try queue.add(2); |
| 595 | 595 | |
| 596 | | expect(heap.peekMax().? == 9); |
| 597 | | expect(heap.peekMax().? == 9); |
| 596 | expect(queue.peekMax().? == 9); |
| 597 | expect(queue.peekMax().? == 9); |
| 598 | 598 | } |
| 599 | 599 | |
| 600 | 600 | test "std.PriorityDequeue: sift up with odd indices" { |
| 601 | | var heap = Heap.init(testing.allocator, lessThanComparison); |
| 602 | | defer heap.deinit(); |
| 601 | var queue = PDQ.init(testing.allocator, lessThanComparison); |
| 602 | defer queue.deinit(); |
| 603 | 603 | const items = [_]u32{ 15, 7, 21, 14, 13, 22, 12, 6, 7, 25, 5, 24, 11, 16, 15, 24, 2, 1 }; |
| 604 | 604 | for (items) |e| { |
| 605 | | try heap.add(e); |
| 605 | try queue.add(e); |
| 606 | 606 | } |
| 607 | 607 | |
| 608 | 608 | const sorted_items = [_]u32{ 1, 2, 5, 6, 7, 7, 11, 12, 13, 14, 15, 15, 16, 21, 22, 24, 24, 25 }; |
| 609 | 609 | for (sorted_items) |e| { |
| 610 | | expectEqual(e, heap.removeMin()); |
| 610 | expectEqual(e, queue.removeMin()); |
| 611 | 611 | } |
| 612 | 612 | } |
| 613 | 613 | |
| 614 | 614 | test "std.PriorityDequeue: sift up with odd indices" { |
| 615 | | var heap = Heap.init(testing.allocator, lessThanComparison); |
| 616 | | defer heap.deinit(); |
| 615 | var queue = PDQ.init(testing.allocator, lessThanComparison); |
| 616 | defer queue.deinit(); |
| 617 | 617 | const items = [_]u32{ 15, 7, 21, 14, 13, 22, 12, 6, 7, 25, 5, 24, 11, 16, 15, 24, 2, 1 }; |
| 618 | 618 | for (items) |e| { |
| 619 | | try heap.add(e); |
| 619 | try queue.add(e); |
| 620 | 620 | } |
| 621 | 621 | |
| 622 | 622 | const sorted_items = [_]u32{ 25, 24, 24, 22, 21, 16, 15, 15, 14, 13, 12, 11, 7, 7, 6, 5, 2, 1 }; |
| 623 | 623 | for (sorted_items) |e| { |
| 624 | | expectEqual(e, heap.removeMax()); |
| 624 | expectEqual(e, queue.removeMax()); |
| 625 | 625 | } |
| 626 | 626 | } |
| 627 | 627 | |
| 628 | 628 | test "std.PriorityDequeue: addSlice min" { |
| 629 | | var heap = Heap.init(testing.allocator, lessThanComparison); |
| 630 | | defer heap.deinit(); |
| 629 | var queue = PDQ.init(testing.allocator, lessThanComparison); |
| 630 | defer queue.deinit(); |
| 631 | 631 | const items = [_]u32{ 15, 7, 21, 14, 13, 22, 12, 6, 7, 25, 5, 24, 11, 16, 15, 24, 2, 1 }; |
| 632 | | try heap.addSlice(items[0..]); |
| 632 | try queue.addSlice(items[0..]); |
| 633 | 633 | |
| 634 | 634 | const sorted_items = [_]u32{ 1, 2, 5, 6, 7, 7, 11, 12, 13, 14, 15, 15, 16, 21, 22, 24, 24, 25 }; |
| 635 | 635 | for (sorted_items) |e| { |
| 636 | | expectEqual(e, heap.removeMin()); |
| 636 | expectEqual(e, queue.removeMin()); |
| 637 | 637 | } |
| 638 | 638 | } |
| 639 | 639 | |
| 640 | 640 | test "std.PriorityDequeue: addSlice max" { |
| 641 | | var heap = Heap.init(testing.allocator, lessThanComparison); |
| 642 | | defer heap.deinit(); |
| 641 | var queue = PDQ.init(testing.allocator, lessThanComparison); |
| 642 | defer queue.deinit(); |
| 643 | 643 | const items = [_]u32{ 15, 7, 21, 14, 13, 22, 12, 6, 7, 25, 5, 24, 11, 16, 15, 24, 2, 1 }; |
| 644 | | try heap.addSlice(items[0..]); |
| 644 | try queue.addSlice(items[0..]); |
| 645 | 645 | |
| 646 | 646 | const sorted_items = [_]u32{ 25, 24, 24, 22, 21, 16, 15, 15, 14, 13, 12, 11, 7, 7, 6, 5, 2, 1 }; |
| 647 | 647 | for (sorted_items) |e| { |
| 648 | | expectEqual(e, heap.removeMax()); |
| 648 | expectEqual(e, queue.removeMax()); |
| 649 | 649 | } |
| 650 | 650 | } |
| 651 | 651 | |
| 652 | 652 | test "std.PriorityDequeue: fromOwnedSlice trivial case 0" { |
| 653 | 653 | const items = [0]u32{}; |
| 654 | | const heap_items = try testing.allocator.dupe(u32, &items); |
| 655 | | var heap = Heap.fromOwnedSlice(testing.allocator, lessThanComparison, heap_items[0..]); |
| 656 | | defer heap.deinit(); |
| 657 | | expectEqual(@as(usize, 0), heap.len); |
| 658 | | expect(heap.removeMinOrNull() == null); |
| 654 | const queue_items = try testing.allocator.dupe(u32, &items); |
| 655 | var queue = PDQ.fromOwnedSlice(testing.allocator, lessThanComparison, queue_items[0..]); |
| 656 | defer queue.deinit(); |
| 657 | expectEqual(@as(usize, 0), queue.len); |
| 658 | expect(queue.removeMinOrNull() == null); |
| 659 | 659 | } |
| 660 | 660 | |
| 661 | 661 | test "std.PriorityDequeue: fromOwnedSlice trivial case 1" { |
| 662 | 662 | const items = [1]u32{1}; |
| 663 | | const heap_items = try testing.allocator.dupe(u32, &items); |
| 664 | | var heap = Heap.fromOwnedSlice(testing.allocator, lessThanComparison, heap_items[0..]); |
| 665 | | defer heap.deinit(); |
| 663 | const queue_items = try testing.allocator.dupe(u32, &items); |
| 664 | var queue = PDQ.fromOwnedSlice(testing.allocator, lessThanComparison, queue_items[0..]); |
| 665 | defer queue.deinit(); |
| 666 | 666 | |
| 667 | | expectEqual(@as(usize, 1), heap.len); |
| 668 | | expectEqual(items[0], heap.removeMin()); |
| 669 | | expect(heap.removeMinOrNull() == null); |
| 667 | expectEqual(@as(usize, 1), queue.len); |
| 668 | expectEqual(items[0], queue.removeMin()); |
| 669 | expect(queue.removeMinOrNull() == null); |
| 670 | 670 | } |
| 671 | 671 | |
| 672 | 672 | test "std.PriorityDequeue: fromOwnedSlice" { |
| 673 | 673 | const items = [_]u32{ 15, 7, 21, 14, 13, 22, 12, 6, 7, 25, 5, 24, 11, 16, 15, 24, 2, 1 }; |
| 674 | | const heap_items = try testing.allocator.dupe(u32, items[0..]); |
| 675 | | var heap = Heap.fromOwnedSlice(testing.allocator, lessThanComparison, heap_items[0..]); |
| 676 | | defer heap.deinit(); |
| 674 | const queue_items = try testing.allocator.dupe(u32, items[0..]); |
| 675 | var queue = PDQ.fromOwnedSlice(testing.allocator, lessThanComparison, queue_items[0..]); |
| 676 | defer queue.deinit(); |
| 677 | 677 | |
| 678 | 678 | const sorted_items = [_]u32{ 1, 2, 5, 6, 7, 7, 11, 12, 13, 14, 15, 15, 16, 21, 22, 24, 24, 25 }; |
| 679 | 679 | for (sorted_items) |e| { |
| 680 | | expectEqual(e, heap.removeMin()); |
| 680 | expectEqual(e, queue.removeMin()); |
| 681 | 681 | } |
| 682 | 682 | } |
| 683 | 683 | |
| 684 | | test "std.PriorityDequeue: update min heap" { |
| 685 | | var heap = Heap.init(testing.allocator, lessThanComparison); |
| 686 | | defer heap.deinit(); |
| 687 | | |
| 688 | | try heap.add(55); |
| 689 | | try heap.add(44); |
| 690 | | try heap.add(11); |
| 691 | | try heap.update(55, 5); |
| 692 | | try heap.update(44, 4); |
| 693 | | try heap.update(11, 1); |
| 694 | | expectEqual(@as(u32, 1), heap.removeMin()); |
| 695 | | expectEqual(@as(u32, 4), heap.removeMin()); |
| 696 | | expectEqual(@as(u32, 5), heap.removeMin()); |
| 697 | | } |
| 698 | | |
| 699 | | test "std.PriorityDequeue: update same min heap" { |
| 700 | | var heap = Heap.init(testing.allocator, lessThanComparison); |
| 701 | | defer heap.deinit(); |
| 702 | | |
| 703 | | try heap.add(1); |
| 704 | | try heap.add(1); |
| 705 | | try heap.add(2); |
| 706 | | try heap.add(2); |
| 707 | | try heap.update(1, 5); |
| 708 | | try heap.update(2, 4); |
| 709 | | expectEqual(@as(u32, 1), heap.removeMin()); |
| 710 | | expectEqual(@as(u32, 2), heap.removeMin()); |
| 711 | | expectEqual(@as(u32, 4), heap.removeMin()); |
| 712 | | expectEqual(@as(u32, 5), heap.removeMin()); |
| 713 | | } |
| 714 | | |
| 715 | | test "std.PriorityDequeue: update max heap" { |
| 716 | | var heap = Heap.init(testing.allocator, lessThanComparison); |
| 717 | | defer heap.deinit(); |
| 718 | | |
| 719 | | try heap.add(55); |
| 720 | | try heap.add(44); |
| 721 | | try heap.add(11); |
| 722 | | try heap.update(55, 5); |
| 723 | | try heap.update(44, 1); |
| 724 | | try heap.update(11, 4); |
| 725 | | |
| 726 | | expectEqual(@as(u32, 5), heap.removeMax()); |
| 727 | | expectEqual(@as(u32, 4), heap.removeMax()); |
| 728 | | expectEqual(@as(u32, 1), heap.removeMax()); |
| 729 | | } |
| 730 | | |
| 731 | | test "std.PriorityDequeue: update same max heap" { |
| 732 | | var heap = Heap.init(testing.allocator, lessThanComparison); |
| 733 | | defer heap.deinit(); |
| 734 | | |
| 735 | | try heap.add(1); |
| 736 | | try heap.add(1); |
| 737 | | try heap.add(2); |
| 738 | | try heap.add(2); |
| 739 | | try heap.update(1, 5); |
| 740 | | try heap.update(2, 4); |
| 741 | | expectEqual(@as(u32, 5), heap.removeMax()); |
| 742 | | expectEqual(@as(u32, 4), heap.removeMax()); |
| 743 | | expectEqual(@as(u32, 2), heap.removeMax()); |
| 744 | | expectEqual(@as(u32, 1), heap.removeMax()); |
| 684 | test "std.PriorityDequeue: update min queue" { |
| 685 | var queue = PDQ.init(testing.allocator, lessThanComparison); |
| 686 | defer queue.deinit(); |
| 687 | |
| 688 | try queue.add(55); |
| 689 | try queue.add(44); |
| 690 | try queue.add(11); |
| 691 | try queue.update(55, 5); |
| 692 | try queue.update(44, 4); |
| 693 | try queue.update(11, 1); |
| 694 | expectEqual(@as(u32, 1), queue.removeMin()); |
| 695 | expectEqual(@as(u32, 4), queue.removeMin()); |
| 696 | expectEqual(@as(u32, 5), queue.removeMin()); |
| 697 | } |
| 698 | |
| 699 | test "std.PriorityDequeue: update same min queue" { |
| 700 | var queue = PDQ.init(testing.allocator, lessThanComparison); |
| 701 | defer queue.deinit(); |
| 702 | |
| 703 | try queue.add(1); |
| 704 | try queue.add(1); |
| 705 | try queue.add(2); |
| 706 | try queue.add(2); |
| 707 | try queue.update(1, 5); |
| 708 | try queue.update(2, 4); |
| 709 | expectEqual(@as(u32, 1), queue.removeMin()); |
| 710 | expectEqual(@as(u32, 2), queue.removeMin()); |
| 711 | expectEqual(@as(u32, 4), queue.removeMin()); |
| 712 | expectEqual(@as(u32, 5), queue.removeMin()); |
| 713 | } |
| 714 | |
| 715 | test "std.PriorityDequeue: update max queue" { |
| 716 | var queue = PDQ.init(testing.allocator, lessThanComparison); |
| 717 | defer queue.deinit(); |
| 718 | |
| 719 | try queue.add(55); |
| 720 | try queue.add(44); |
| 721 | try queue.add(11); |
| 722 | try queue.update(55, 5); |
| 723 | try queue.update(44, 1); |
| 724 | try queue.update(11, 4); |
| 725 | |
| 726 | expectEqual(@as(u32, 5), queue.removeMax()); |
| 727 | expectEqual(@as(u32, 4), queue.removeMax()); |
| 728 | expectEqual(@as(u32, 1), queue.removeMax()); |
| 729 | } |
| 730 | |
| 731 | test "std.PriorityDequeue: update same max queue" { |
| 732 | var queue = PDQ.init(testing.allocator, lessThanComparison); |
| 733 | defer queue.deinit(); |
| 734 | |
| 735 | try queue.add(1); |
| 736 | try queue.add(1); |
| 737 | try queue.add(2); |
| 738 | try queue.add(2); |
| 739 | try queue.update(1, 5); |
| 740 | try queue.update(2, 4); |
| 741 | expectEqual(@as(u32, 5), queue.removeMax()); |
| 742 | expectEqual(@as(u32, 4), queue.removeMax()); |
| 743 | expectEqual(@as(u32, 2), queue.removeMax()); |
| 744 | expectEqual(@as(u32, 1), queue.removeMax()); |
| 745 | 745 | } |
| 746 | 746 | |
| 747 | 747 | test "std.PriorityDequeue: iterator" { |
| 748 | | var heap = Heap.init(testing.allocator, lessThanComparison); |
| 748 | var queue = PDQ.init(testing.allocator, lessThanComparison); |
| 749 | 749 | var map = std.AutoHashMap(u32, void).init(testing.allocator); |
| 750 | 750 | defer { |
| 751 | | heap.deinit(); |
| 751 | queue.deinit(); |
| 752 | 752 | map.deinit(); |
| 753 | 753 | } |
| 754 | 754 | |
| 755 | 755 | const items = [_]u32{ 54, 12, 7, 23, 25, 13 }; |
| 756 | 756 | for (items) |e| { |
| 757 | | _ = try heap.add(e); |
| 757 | _ = try queue.add(e); |
| 758 | 758 | _ = try map.put(e, {}); |
| 759 | 759 | } |
| 760 | 760 | |
| 761 | | var it = heap.iterator(); |
| 761 | var it = queue.iterator(); |
| 762 | 762 | while (it.next()) |e| { |
| 763 | 763 | _ = map.remove(e); |
| 764 | 764 | } |
| ... | ... | @@ -767,14 +767,14 @@ test "std.PriorityDequeue: iterator" { |
| 767 | 767 | } |
| 768 | 768 | |
| 769 | 769 | test "std.PriorityDequeue: remove at index" { |
| 770 | | var heap = Heap.init(testing.allocator, lessThanComparison); |
| 771 | | defer heap.deinit(); |
| 770 | var queue = PDQ.init(testing.allocator, lessThanComparison); |
| 771 | defer queue.deinit(); |
| 772 | 772 | |
| 773 | | try heap.add(3); |
| 774 | | try heap.add(2); |
| 775 | | try heap.add(1); |
| 773 | try queue.add(3); |
| 774 | try queue.add(2); |
| 775 | try queue.add(1); |
| 776 | 776 | |
| 777 | | var it = heap.iterator(); |
| 777 | var it = queue.iterator(); |
| 778 | 778 | var elem = it.next(); |
| 779 | 779 | var idx: usize = 0; |
| 780 | 780 | const two_idx = while (elem != null) : (elem = it.next()) { |
| ... | ... | @@ -783,17 +783,17 @@ test "std.PriorityDequeue: remove at index" { |
| 783 | 783 | idx += 1; |
| 784 | 784 | } else unreachable; |
| 785 | 785 | |
| 786 | | expectEqual(heap.removeIndex(two_idx), 2); |
| 787 | | expectEqual(heap.removeMin(), 1); |
| 788 | | expectEqual(heap.removeMin(), 3); |
| 789 | | expectEqual(heap.removeMinOrNull(), null); |
| 786 | expectEqual(queue.removeIndex(two_idx), 2); |
| 787 | expectEqual(queue.removeMin(), 1); |
| 788 | expectEqual(queue.removeMin(), 3); |
| 789 | expectEqual(queue.removeMinOrNull(), null); |
| 790 | 790 | } |
| 791 | 791 | |
| 792 | 792 | test "std.PriorityDequeue: iterator while empty" { |
| 793 | | var heap = Heap.init(testing.allocator, lessThanComparison); |
| 794 | | defer heap.deinit(); |
| 793 | var queue = PDQ.init(testing.allocator, lessThanComparison); |
| 794 | defer queue.deinit(); |
| 795 | 795 | |
| 796 | | var it = heap.iterator(); |
| 796 | var it = queue.iterator(); |
| 797 | 797 | |
| 798 | 798 | expectEqual(it.next(), null); |
| 799 | 799 | } |
| ... | ... | @@ -802,23 +802,23 @@ test "std.PriorityDequeue: fuzz testing min" { |
| 802 | 802 | var prng = std.rand.DefaultPrng.init(0x12345678); |
| 803 | 803 | |
| 804 | 804 | const test_case_count = 100; |
| 805 | | const heap_size = 1_000; |
| 805 | const queue_size = 1_000; |
| 806 | 806 | |
| 807 | 807 | var i: usize = 0; |
| 808 | 808 | while (i < test_case_count) : (i += 1) { |
| 809 | | try fuzzTestMin(&prng.random, heap_size); |
| 809 | try fuzzTestMin(&prng.random, queue_size); |
| 810 | 810 | } |
| 811 | 811 | } |
| 812 | 812 | |
| 813 | | fn fuzzTestMin(rng: *std.rand.Random, comptime heap_size: usize) !void { |
| 813 | fn fuzzTestMin(rng: *std.rand.Random, comptime queue_size: usize) !void { |
| 814 | 814 | const allocator = testing.allocator; |
| 815 | | const items = try generateRandomSlice(allocator, rng, heap_size); |
| 815 | const items = try generateRandomSlice(allocator, rng, queue_size); |
| 816 | 816 | |
| 817 | | var heap = Heap.fromOwnedSlice(allocator, lessThanComparison, items); |
| 818 | | defer heap.deinit(); |
| 817 | var queue = PDQ.fromOwnedSlice(allocator, lessThanComparison, items); |
| 818 | defer queue.deinit(); |
| 819 | 819 | |
| 820 | 820 | var last_removed: ?u32 = null; |
| 821 | | while (heap.removeMinOrNull()) |next| { |
| 821 | while (queue.removeMinOrNull()) |next| { |
| 822 | 822 | if (last_removed) |last| { |
| 823 | 823 | expect(last <= next); |
| 824 | 824 | } |
| ... | ... | @@ -830,23 +830,23 @@ test "std.PriorityDequeue: fuzz testing max" { |
| 830 | 830 | var prng = std.rand.DefaultPrng.init(0x87654321); |
| 831 | 831 | |
| 832 | 832 | const test_case_count = 100; |
| 833 | | const heap_size = 1_000; |
| 833 | const queue_size = 1_000; |
| 834 | 834 | |
| 835 | 835 | var i: usize = 0; |
| 836 | 836 | while (i < test_case_count) : (i += 1) { |
| 837 | | try fuzzTestMax(&prng.random, heap_size); |
| 837 | try fuzzTestMax(&prng.random, queue_size); |
| 838 | 838 | } |
| 839 | 839 | } |
| 840 | 840 | |
| 841 | | fn fuzzTestMax(rng: *std.rand.Random, heap_size: usize) !void { |
| 841 | fn fuzzTestMax(rng: *std.rand.Random, queue_size: usize) !void { |
| 842 | 842 | const allocator = testing.allocator; |
| 843 | | const items = try generateRandomSlice(allocator, rng, heap_size); |
| 843 | const items = try generateRandomSlice(allocator, rng, queue_size); |
| 844 | 844 | |
| 845 | | var heap = Heap.fromOwnedSlice(testing.allocator, lessThanComparison, items); |
| 846 | | defer heap.deinit(); |
| 845 | var queue = PDQ.fromOwnedSlice(testing.allocator, lessThanComparison, items); |
| 846 | defer queue.deinit(); |
| 847 | 847 | |
| 848 | 848 | var last_removed: ?u32 = null; |
| 849 | | while (heap.removeMaxOrNull()) |next| { |
| 849 | while (queue.removeMaxOrNull()) |next| { |
| 850 | 850 | if (last_removed) |last| { |
| 851 | 851 | expect(last >= next); |
| 852 | 852 | } |
| ... | ... | @@ -858,33 +858,33 @@ test "std.PriorityDequeue: fuzz testing min and max" { |
| 858 | 858 | var prng = std.rand.DefaultPrng.init(0x87654321); |
| 859 | 859 | |
| 860 | 860 | const test_case_count = 100; |
| 861 | | const heap_size = 1_000; |
| 861 | const queue_size = 1_000; |
| 862 | 862 | |
| 863 | 863 | var i: usize = 0; |
| 864 | 864 | while (i < test_case_count) : (i += 1) { |
| 865 | | try fuzzTestMinMax(&prng.random, heap_size); |
| 865 | try fuzzTestMinMax(&prng.random, queue_size); |
| 866 | 866 | } |
| 867 | 867 | } |
| 868 | 868 | |
| 869 | | fn fuzzTestMinMax(rng: *std.rand.Random, heap_size: usize) !void { |
| 869 | fn fuzzTestMinMax(rng: *std.rand.Random, queue_size: usize) !void { |
| 870 | 870 | const allocator = testing.allocator; |
| 871 | | const items = try generateRandomSlice(allocator, rng, heap_size); |
| 871 | const items = try generateRandomSlice(allocator, rng, queue_size); |
| 872 | 872 | |
| 873 | | var heap = Heap.fromOwnedSlice(allocator, lessThanComparison, items); |
| 874 | | defer heap.deinit(); |
| 873 | var queue = PDQ.fromOwnedSlice(allocator, lessThanComparison, items); |
| 874 | defer queue.deinit(); |
| 875 | 875 | |
| 876 | 876 | var last_min: ?u32 = null; |
| 877 | 877 | var last_max: ?u32 = null; |
| 878 | 878 | var i: usize = 0; |
| 879 | | while (i < heap_size) : (i += 1) { |
| 879 | while (i < queue_size) : (i += 1) { |
| 880 | 880 | if (i % 2 == 0) { |
| 881 | | const next = heap.removeMin(); |
| 881 | const next = queue.removeMin(); |
| 882 | 882 | if (last_min) |last| { |
| 883 | 883 | expect(last <= next); |
| 884 | 884 | } |
| 885 | 885 | last_min = next; |
| 886 | 886 | } else { |
| 887 | | const next = heap.removeMax(); |
| 887 | const next = queue.removeMax(); |
| 888 | 888 | if (last_max) |last| { |
| 889 | 889 | expect(last >= next); |
| 890 | 890 | } |