public class test { public static void main(String[] args) { String x = "000"; for (int i = 1; i < 1000; i ++){ System.out.println(x.substring(0, x.length() - String.valueOf(i).length()) + String.valueOf(i)); } } }
public String changLeng(String x,int addInt){ 在这里addInt = 3 StringBuffer returnStr = new StringBuffer(); if(x.length <3){ for(int i = 0; i<addInt-x.length;i++){ returnStr.append("0"); } } return returnStr.append("x"); }
public class test {
public static void main(String[] args) {
String x = "000";
for (int i = 1; i < 1000; i ++){
System.out.println(x.substring(0, x.length() - String.valueOf(i).length()) + String.valueOf(i));
}
}
}
在这里addInt = 3
StringBuffer returnStr = new StringBuffer();
if(x.length <3){
for(int i = 0; i<addInt-x.length;i++){
returnStr.append("0");
}
}
return returnStr.append("x");
}
System.out.printf("%05d",a); 00003