解题思路:
注意事项:
参考代码:import java.util.Arrays;
import java.util.Comparator;
import java.util.Scanner;
public class c_2684 {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int n=sc.nextInt();
int m=sc.nextInt();
Number number[]=new Number[n];
int x,y;
String s="";
for(int i=1;i<=n;i++){
x=i;
y=0;
s=String.valueOf(i); //数位求和
char c[]=s.toCharArray();
for(int j=0;j<c.length;j++){
y+=c[j]-48;
}
number[i-1]=new Number(x,y);
}
Arrays.sort(number,new Comparator<Number>() {//改写排序
@Override
public int compare(Number o1, Number o2) {
if(o1.b==o2.b)
return o1.a-o2.a;
return o1.b-o2.b;
}
});
System.out.println(number[m-1].a);
}
}
class Number{
int a;
int b;
public Number(int a,int b){
this.a=a;
this.b=b;
}
}
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