首页 > 代码库 > [LeetCode]8 String to Integer (atoi)
[LeetCode]8 String to Integer (atoi)
https://oj.leetcode.com/problems/string-to-integer-atoi/
http://fisherlei.blogspot.com/2013/01/leetcode-string-to-integer-atoi.html
public class Solution { public int atoi(String str) { // Validations if (str == null || str.length() == 0) return 0; char[] chars = str.trim().toCharArray(); int len = chars.length; int i = 0; // Check +/- boolean negative = false; if (chars[0] == ‘+‘) { i++; } else if (chars[0] == ‘-‘) { negative = true; i ++; } double result = 0; for (; i < len ; i ++) { char c = chars[i]; if (c >= ‘0‘ && c <= ‘9‘) result = result * 10 + (c - ‘0‘); else break; // Break the loop when meeting invalid chars. } if (negative) result = -result; if (result > Integer.MAX_VALUE) return Integer.MAX_VALUE; if (result < Integer.MIN_VALUE) return Integer.MIN_VALUE; return (int)result; } }
[LeetCode]8 String to Integer (atoi)
声明:以上内容来自用户投稿及互联网公开渠道收集整理发布,本网站不拥有所有权,未作人工编辑处理,也不承担相关法律责任,若内容有误或涉及侵权可进行投诉: 投诉/举报 工作人员会在5个工作日内联系你,一经查实,本站将立刻删除涉嫌侵权内容。