为什么下面的算法不能停止?str 是搜索的字符串, findStr 是我要找的字符串。
String str = "helloslkhellodjladfjhello";
String findStr = "hello";
int lastIndex = 0;
int count =0;
while(lastIndex != -1){
lastIndex = str.indexOf(findStr,lastIndex);
if( lastIndex != -1){
count ++;
}
lastIndex+=findStr.length();
}
System.out.println(count);