Renzhouzhou的博客

问题：https://leetcode.com/problems/two-sum-ii-input-array-is-sorted/?tab=Description Given an array of integers that is already sorted in ascending order, find two numbers such that they add up to a spe

问题：https://leetcode.com/problems/reverse-vowels-of-a-string/?tab=Description Write a function that takes a string as input and reverse only the vowels of a string. 反转字符中的元音字符。 Example 1:Given s = “h

问题：https://leetcode.com/problems/valid-palindrome/?tab=Description Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.给定一个字符串，确定它是否是回文的，仅考虑其中的

问题：https://leetcode.com/problems/implement-strstr/?tab=Description Implement strStr().Returns the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack. 给两个字符串，求