algorona/lib.rs
// Copyright 2021 tison <wander4096@gmail.com>.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
pub fn lower_bound(ns: Vec<i32>, t: i32) -> usize {
let mut lo = 0;
let mut hi = ns.len();
while lo < hi {
let mi = lo + ((hi - lo) >> 1);
if ns[mi] < t {
lo = mi + 1;
} else {
hi = mi;
}
}
lo
}