统计一行字符中英文字母、空格、数字、其他字符的个数

谁借莪１个温暖的怀抱￠ 2023-07-01 08:32 29阅读 0赞

[https://www.nowcoder.com/practice/539054b4c33b4776bc350155f7abd8f5?tpId=37&tqId=21263&tPage=2&rp=&ru=%2Fta%2Fhuawei&qru=%2Fta%2Fhuawei%2Fquestion-ranking][https_www.nowcoder.com_practice_539054b4c33b4776bc350155f7abd8f5_tpId_37_tqId_21263_tPage_2_rp_ru_2Fta_2Fhuawei_qru_2Fta_2Fhuawei_2Fquestion-ranking]

## 一、题目描述 ##

输入一行字符，分别统计出包含英文字母、空格、数字和其它字符的个数。

## 二、代码实现 ##

import java.util.Scanner;
    
    public class Main {
        public static void main(String[] args) {
            Scanner sc = new Scanner(System.in);
            
            while (sc.hasNextLine()) {
                String input = sc.nextLine();
                int countChar = 0;
                int countBlank = 0;
                int countNumber = 0;
                int countOther = 0;
                
                for (int i=0; i<input.length(); i++) {
                    char ch = input.charAt(i);
                    if ((ch>='A' && ch<='Z') || (ch>='a' && ch<='z')) {
                        countChar++;
                    } else if (ch == ' ') {
                        countBlank++;
                    } else if (ch>='0' && ch<='9') {
                        countNumber++;
                    } else {
                        countOther++;
                    }
                }
                
                System.out.println(countChar);
                System.out.println(countBlank);
                System.out.println(countNumber);
                System.out.println(countOther);
                
            }
        }
    }

[https_www.nowcoder.com_practice_539054b4c33b4776bc350155f7abd8f5_tpId_37_tqId_21263_tPage_2_rp_ru_2Fta_2Fhuawei_qru_2Fta_2Fhuawei_2Fquestion-ranking]: https://www.nowcoder.com/practice/539054b4c33b4776bc350155f7abd8f5?tpId=37&tqId=21263&tPage=2&rp=&ru=%2Fta%2Fhuawei&qru=%2Fta%2Fhuawei%2Fquestion-ranking