Zig 0.17.0-dev (Split by item)

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insertion

Stable in-place sort. O(n) best case, O(pow(n, 2)) worst case. O(1) memory (no allocator required). Sorts in ascending order with respect to the given lessThan function.

sort.insertion

pub fn insertion(
    comptime T: type,
    items: []T,
    context: anytype,
    comptime lessThanFn: fn (@TypeOf(context), lhs: T, rhs: T) bool,
) void

File

lib/std/sort.zig:16

Code

pub fn insertion(
    comptime T: type,
    items: []T,
    context: anytype,
    comptime lessThanFn: fn (@TypeOf(context), lhs: T, rhs: T) bool,
) void {
    const Context = struct {
        items: []T,
        sub_ctx: @TypeOf(context),

        pub fn lessThan(ctx: @This(), a: usize, b: usize) bool {
            return lessThanFn(ctx.sub_ctx, ctx.items[a], ctx.items[b]);
        }

        pub fn swap(ctx: @This(), a: usize, b: usize) void {
            return mem.swap(T, &ctx.items[a], &ctx.items[b]);
        }
    };
    insertionContext(0, items.len, Context{ .items = items, .sub_ctx = context });
}