有一個字符串，其中包含中文字符、英文字符和數字、空格及其餘字符，請統計和打印出各個字符的個數。

時間 2019-11-19

標籤有一個字符串其中包含中文字符英文數字空格其餘統計印出各個個數简体版

原文原文鏈接

package cglib;git

public class StringNumber {
    /*也能夠用正則
     * Pattern p = Pattern.compile("[a-zA-Z]");
     * Pattern p = Pattern.compile("[\\u4e00-\\u9fa5]");
     * Pattern p = Pattern.compile("\\d");
        Matcher m = p.matcher(str);
        while(m.find()){
            count++;
        }
     *
     *
     *
     *
     *
     *
     * */
   public static void main(String[] args) {
       // TODO Auto-generated method stub
       String str = "adbs13姿z勢12年概~3!a @x # $率論zs12 szsgss 1234@#￥說說愛き，。？！%……&*（）——{}【】";
       StringNumber countCharacter = new StringNumber();
       countCharacter.count(str);

   }

   public void count(String str){
       if (null == str || str.equals("")) {
            System.out.println("字符串爲空");
            return;
       }
       int engishCount = 0;
       int chineseCount = 0;
       int digitCount = 0;
       int spaceCount = 0;
       int otherCount = 0;
        for(int i=0;i<str.length();i++){
           if(str.charAt(i)>= '0' && str.charAt(i)<='9'){
               digitCount++;
           }
           else if((str.charAt(i)>= 'a' && str.charAt(i)<='z')||(str.charAt(i)>= 'A' && str.charAt(i)<='Z')){
               engishCount++;
           } else if (str.charAt(i) ==' ') {
               spaceCount ++;
            } else if (isChinese(str.charAt(i))) {
               chineseCount ++;
            } else {
               otherCount ++;
            }
        }
        System.out.println("中文："+chineseCount);
        System.out.println("英文："+engishCount);
        System.out.println("數字："+digitCount);
        System.out.println("空格："+spaceCount);
        System.out.println("其餘字符："+otherCount);

   }
   /***
     * 判斷字符是否爲中文
     * @param ch 須要判斷的字符
     * @return 中文返回true，非中文返回false
     */
    public boolean isChinese(char ch) {
        //獲取此字符的UniCodeBlock
        Character.UnicodeBlock ub = Character.UnicodeBlock.of(ch);
        // GENERAL_PUNCTUATION 判斷中文的「號
        // CJK_SYMBOLS_AND_PUNCTUATION 判斷中文的。號
        // HALFWIDTH_AND_FULLWIDTH_FORMS 判斷中文的，號
        if (ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS || ub == Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS
                || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_B
                || ub == Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION || ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS
                || ub == Character.UnicodeBlock.GENERAL_PUNCTUATION) {
            System.out.println(ch + " 是中文");
            return true;
        }
        return false;
    }


   }
   spa