java 简单字符串的编写 查找字符串出现的位置

Question

如题所述

Answer 1

public class SearchString {
public static void main(String[] args) {
String string = "Thank you,i like you,do you like me?";
// 1
int position = string.lastIndexOf("you");
System.out.println("字符串you最后一次出现的位置:" + position);
// 2
char target = 'k';
int count = 0;
for (int i = 0; i < string.length(); i++) {
if (string.charAt(i) == target) {
count++;
}
}
System.out.println("字母k出现次数:" + count);
// 3
String me =
string.substring(string.lastIndexOf("like") + "like".length() + 1, string.length() - 1);
System.out.println(me);
}
}