zoukankan      html  css  js  c++  java
  • 520. Detect Capital

    Given a word, you need to judge whether the usage of capitals in it is right or not.

    We define the usage of capitals in a word to be right when one of the following cases holds:

    1. All letters in this word are capitals, like "USA".
    2. All letters in this word are not capitals, like "leetcode".
    3. Only the first letter in this word is capital if it has more than one letter, like "Google".

    Otherwise, we define that this word doesn't use capitals in a right way.

    Example 1:

    Input: "USA"
    Output: True
    

    Example 2:

    Input: "FlaG"
    Output: False
    

    Note: The input will be a non-empty word consisting of uppercase and lowercase latin letters.

    题意:给你一个字符串,判断其是否符合规范

    这是我的代码。感觉有点蠢。

    class Solution {
    public:
        bool detectCapitalUse(string word) {
            if(word[0] >= 65 && word[0] <= 90){
                int n = 0;
                int m = 0;
                for(int i = 1; i < word.size(); i++){
                    if(word[i] <= 90)
                        m = 1;
                    else
                        n = 1;
                }
                if(n + m > 1)
                    return false;
            }
            else{
                for(int i = 1; i < word.size(); i++){
                    if(word[i] < 'a')
                        return false;
                }
            }
            return true;
        }
    };

    还有一个是C++正则表达式做出来的。

    class Solution {
    public:
        bool detectCapitalUse(string word) {
            return regex_match(word, regex("[A-Z]+|[a-z]+|[A-Z][a-z]*"));
        }
    };

    Discuss 网友Python答案:

    When adding a boolean in python it is changed to a 1 or 0. You can loop through each character and sum the amount of upper case letters seen.

    def detectCapitalUse(self, word):
        total = 0
        for c in word:
            total += c.isupper()
        return total == 0 or len(word) == total or (total == 1 and word[0].isupper())
        # return all_lowercase or all_uppercase or only_the_first_is_upper
  • 相关阅读:
    (III)AOP:第六节:通知
    (III)AOP:第八节:多切面运行顺序
    (IV)JdbcTemplate
    (III)AOP:第三节:AOP配置与使用
    (III)AOP:第十节:AOP 总结
    (III)AOP:第二节:AOP概述
    (III)AOP:第四节:切入点表达式
    (III)AOP:第九节:XML配置切面
    (III)AOP:第五节:当前连接点
    7月3号
  • 原文地址:https://www.cnblogs.com/hutonm/p/6526740.html
Copyright © 2011-2022 走看看