首页 > itarticle > 344.reverse string 解答

344.reverse string 解答

admin 11月 13, 2020 0

Write a function that takes a string as input and returns the string reversed.
Example:
Given s = “hello”, return “olleh”.

解答

public class Solution {
	public String reverseString(String s) {
		StringBuilder sbs = new StringBuilder();
		int l = s.length();
		for (int i = 0; i < l; i++) {// 由此看出l=5，并且string字符串计数也是从0开始，但为什么replace计数反而不正常？解答：因为java中范围边界取值实际为下标左边的值
			sbs.insert(0, s.charAt(i));
		}
		return sbs.toString();
	}
}