好垃圾的思维,看我的
package cn.itcast;
public class Case10 {
public static void main(String[] args) {
String str = "HMC是XY这是一个程序";
System.out.println(cutString(str, 9));
}
public static String cutString(String str, int a) {
String s = str;
if (a < str.length()) {
String s1 = new String(str.getBytes(), 0, a + 1);
s = s1.substring(0, s1.length() - 1);
}
return s;
}
}
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