package com.gblfy.ws.client;import java.util.ArrayList;
import java.util.List;public class StrCount {public static void main(String[] args) {//指定字符串String keywords = "2021-08-22";//构造集合数据List<String> dataList = dataList();//字符串出现的次数int appearNum = findStrCount(dataList, keywords);System.out.println("keywords在集合中出现的次数为:" + appearNum);}/*** 根据指定字符串，查询出现的次数** @param keyList* @param keywords* @return*/public static int findStrCount(List<String> keyList, String keywords) {int count = 0;for (String keyVal : keyList) {String keyValdeal = keyVal.substring(0, 10);if (keyValdeal.equals(keywords)) {count++;}}return count;}/*** 构造list数据** @return*/public static List<String> dataList() {List<String> keyStrList = new ArrayList<>();for (int i = 0; i < 10; i++) {keyStrList.add("2021-08-0" + String.valueOf(i));}return keyStrList;}
}