归档 2017

LeetCode Weekly Contest 59解题报告

LeetCode Weekly Contest 59是LeetCode举办的第六十三场正式周赛,共4道题目,比赛时长1.5小时。

比赛链接:https://leetcode.com/contest/leetcode-weekly-contest-59/

题解列表:

LeetCode 728. Self Dividing Numbers

LeetCode 729. My Calendar I

LeetCode 730. Count Different Palindromic Subsequences

LeetCode 731. My Calendar II

[LeetCode]Count Different Palindromic Subsequences

题目描述:

LeetCode 730. Count Different Palindromic Subsequences

Given a string S, find the number of different non-empty palindromic subsequences in S, and return that number modulo 10^9 + 7.

A subsequence of a string S is obtained by deleting 0 ...

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