java 基礎 - 尋找某個字串出現的次數及位置

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尋找某個字串出現的次數及位置

public class search {
    public static void main(String[] args){

        String str = "abc123abcd1234";
        String searchStr ="bc";
        int count = getStrCount(str,searchStr);
        System.out.println("count is: "+ count);

    }


    public static int getStrCount(String str,String searchStr){
        int index =0;//define the index
        int count =0;//define the count

        while((index=str.indexOf(searchStr,index))!= -1) {

            if (searchStr.equals(str.substring(index,index+searchStr.length()))) {

                System.out.println("index is :" + index);//print index

                index = index + searchStr.length();

                count++;

            }
        }
        return count;
    }

}

 

運行結果：

index is :1
index is :7
count is: 2

 

java 基礎 - 尋找某個字串出現的次數及位置