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-rw-r--r--lib/std/priority_queue.zig23
1 files changed, 13 insertions, 10 deletions
diff --git a/lib/std/priority_queue.zig b/lib/std/priority_queue.zig
index 9f82a15d28..52d9f59951 100644
--- a/lib/std/priority_queue.zig
+++ b/lib/std/priority_queue.zig
@@ -100,7 +100,7 @@ pub fn PriorityQueue(comptime T: type, comptime Context: type, comptime compareF
const item = self.items[index];
self.items[index] = last;
self.len -= 1;
- siftDown(self, 0);
+ siftDown(self, index);
return item;
}
@@ -460,22 +460,25 @@ test "std.PriorityQueue: remove at index" {
var queue = PQlt.init(testing.allocator, {});
defer queue.deinit();
- try queue.add(3);
- try queue.add(2);
- try queue.add(1);
+ const items = [_]u32{ 2, 1, 8, 9, 3, 4, 5 };
+ for (items) |e| {
+ _ = try queue.add(e);
+ }
var it = queue.iterator();
- var elem = it.next();
var idx: usize = 0;
- const two_idx = while (elem != null) : (elem = it.next()) {
- if (elem.? == 2)
+ const two_idx = while (it.next()) |elem| {
+ if (elem == 2)
break idx;
idx += 1;
} else unreachable;
-
+ var sorted_items = [_]u32{ 1, 3, 4, 5, 8, 9 };
try expectEqual(queue.removeIndex(two_idx), 2);
- try expectEqual(queue.remove(), 1);
- try expectEqual(queue.remove(), 3);
+
+ var i: usize = 0;
+ while (queue.removeOrNull()) |n| : (i += 1) {
+ try expectEqual(n, sorted_items[i]);
+ }
try expectEqual(queue.removeOrNull(), null);
}