leetcode 344. Reverse String

344. Reverse String

Write a function that takes a string as input and returns the string reversed.

Example: Given s = "hello", return "olleh".

代码：

public class Solution { public String reverseString(String string) { char []charArray = string.toCharArray(); int length = string.length(); for (int i = 0; i < length / 2; i++) { char intern = charArray[i]; charArray[i] = charArray[length - i - 1]; charArray[length - i - 1] = intern; } String string2 = string.valueOf(charArray); return string2; } } 总结：利用数组将字符串反转，注意循环次数 length/2 即可。