https://shio-chan-dev.github.io/jeanblog/zh/tags/leetcode-338/Recent content in LeetCode 338 on Jeanphilo BlogHugo -- 0.165.0zh-cnWed, 15 Jul 2026 00:00:00 +0800https://shio-chan-dev.github.io/jeanblog/zh/alg/leetcode/hot100/338-counting-bits/Wed, 15 Jul 2026 00:00:00 +0800https://shio-chan-dev.github.io/jeanblog/zh/alg/leetcode/hot100/338-counting-bits/从对 0..n 每个数字重复统计的 baseline 出发，推导 answer[i] = answer[i & (i - 1)] + 1，在线性时间内完成比特位计数。