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题目链接:Leetcode ：167. Two Sum II - Input array is sorted (Easy)题目描述：在有序数组中找出两个数，使它们的和为 target。Input: numbers={2, 7, 11, 15}, target=9Output: index1=1, index2=2解package 双指针;/** * 题目描述：在有序数组中...

原文链接：Sum of Square Numbers (Easy)题目描述：判断一个数是否为两个数的平方和。Input: 5Output: TrueExplanation: 1 * 1 + 2 * 2 = 5/** * 2. 两数平方和 * Input: 5 * Output: True * Explanation: 1 * 1 + 2 * 2 = 5 * 判断一个数是...

原文链接：Reverse Vowels of a String (Easy)Given s = “leetcode”, return “leotcede”.思路：使用双指针指向待反转的两个元音字符，一个指针从头向尾遍历，一个指针从尾到头遍历。/** * 3. 反转字符串中的元音字符 * aeiou * Given s = "leetcode", return "leotce...

原文链接：Valid Palindrome II (Easy)Input: “abca”Output: TrueExplanation: You could delete the character ‘c’.题目描述：可以删除一个字符，判断是否能构成回文字符串。/** * Input: "abca" * Output: True * Explanation: You c...