Java统计字符中的英文字母、空格、数字和其它字符的个数

た入场券 2021-09-28 10:50 291阅读 0赞

输入一行字符，分别统计出其中英文字母、空格、数字和其它字符的个数

public static void main(String[] args) {
            int digital = 0;
            int character = 0;
            int other = 0;
             int blank = 0;
             char[] ch = null;
             Scanner sc = new Scanner(System.in);
             String s = sc.nextLine();
             ch = s.toCharArray();
             for(int i=0; i<ch.length; i++) {
              if(ch[i] >= '0' && ch[i] <= '9') {
               digital ++;
              } else if((ch[i] >= 'a' && ch[i] <= 'z') || ch[i] > 'A' && ch[i] <= 'Z') {
               character ++;
              } else if(ch[i] == ' ') {
               blank ++;
              } else {
               other ++;
              }
              }
             System.out.println("数字个数: " + digital);
             System.out.println("英文字母个数: " + character);
             System.out.println("空格个数: " + blank);
             System.out.println("其他字符个数:" + other );
       }

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