public class Test {
public static void main(String[] args) {
String strS = "This is the string in which you have to search for a subs.";
String subs = "subs";
boolean found = false;
int max = strS.length() - subs.length();
testlbl:
for (int i = 0; i <= max; i++) {
int length = subs.length();
int j = i;
int k = 0;
while (length-- != 0) {
if(strS.charAt(j++) != subs.charAt(k++)){
continue testlbl;
}
}
found = true;
break testlbl;
}
if (found) {
System.out.println("发现子字符串。");
}
else {
System.out.println("字符串中没有发现子字符串。");
}
}
}
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