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LeetCode 300. Longest Increasing Subsequence 问题描述 Given an unsorted array of integers, find the length of longest increasing subsequence. Example Input: [10,9,2,5,3,7,101,18] Output: 4 Explanation: T...

LeetCode 32. Longest Valid Parentheses 问题描述 Given a string containing just the characters '(' and ')', find the length of the longest valid (well-formed) parentheses substring. 示例 Example 1 Input: "((...

LeetCode 72. Edit Distance 问题描述 Given two words word1 and word2, find the minimum number of operations required to convert word1 to word2. You have the following 3 operations permitted on a word: Ins...

LeetCode 403. Frog Jump 问题描述 A frog is crossing a river. The river is divided into x units and at each unit there may or may not exist a stone. The frog can jump on a stone, but it must not jump into ...

LeetCode 338. Counting Bits 问题描述 Given a non negative integer number num. For every numbers i in the range 0 ≤ i ≤ num calculate the number of 1’s in their binary representation and return them as an ...