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items are not sorted, using linear search

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This commit is contained in:
Bhargav Srinivasan 2020-09-22 01:50:22 -07:00
parent 69f0fc513a
commit 1345f87f4e
1 changed files with 10 additions and 3 deletions
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13
lib/std/priority_queue.zig
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@ -190,12 +190,19 @@ pub fn PriorityQueue(comptime T: type) type {
self.len = new_len;
}
fn orderFn(lhs: T, rhs: T) std.math.Order {
return std.math.order(lhs, rhs);
fn linearSearch(elem: T, items: []const T) usize {
var found: usize = 0;
for (items) |item, i| {
if (item == elem) {
found = i;
break;
}
}
return found;
}
pub fn update(self: *Self, elem: T, new_elem: T) !void {
var update_index: usize = std.sort.binarySearch(T, elem, self.items, {}, orderFn) orelse 0;
var update_index: usize = linearSearch(elem, self.items);
assert (update_index >= 0 and update_index < self.items.len);
_ = self.removeIndex(update_index);
try self.add(new_elem);