https://h30306.github.io/blog/tags/bitmask/Recent content in Bitmask onHugo -- gohugo.ioenhwork0511@gmail.com (Wei Yi Chung)hwork0511@gmail.com (Wei Yi Chung)© 2026 Wei Yi ChungWed, 09 Sep 2026 00:00:00 +0000https://h30306.github.io/blog/leetcode/leetcode-996/Wed, 09 Sep 2026 00:00:00 +0000hwork0511@gmail.com (Wei Yi Chung)https://h30306.github.io/blog/leetcode/leetcode-996/LeetCode 996 note: with n at most 12, use bitmask DP: dp[mask][last] = permutations using the set mask and ending with last; dedupe by using equal values in index orderhttps://h30306.github.io/blog/leetcode/leetcode-2376/Sat, 05 Sep 2026 00:00:00 +0000hwork0511@gmail.com (Wei Yi Chung)https://h30306.github.io/blog/leetcode/leetcode-2376/LeetCode 2376 note: digit DP with state (pos, tight, started, mask); the mask records used digits, and leading zeros must not mark 0 as used