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问题： 给定有0和1构成的二维数组， 求数组中，连续 1 构成正方形的面积最大是多少。 Example 1: Input: matrix = [["1","0","1","0","0"],["1","0","1","1","1"],["1","1","1","1","1"],["1&quo 阅读全文
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问题： 给定字符串s，和词典wordDict 若s可拆分成多个子串，存在于词典中，则返回true。否则返回false。 Example 1: Input: s = "leetcode", wordDict = ["leet","code"] Output: true Explanation: Ret 阅读全文
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问题： 给定一个数组，求任意区间[left, right]的元素和。 Example 1: Input ["NumArray", "sumRange", "sumRange", "sumRange"] [[[-2, 0, 3, -5, 2, -1]], [0, 2], [2, 5], [0, 5]] 阅读全文