题解 | #字符统计#

import java.io.; import java.util.;

public class Main{ public static void main(String[] args) throws IOException{ BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); String str; while((str=br.readLine())!=null){ char[] chArr = str.toCharArray(); int[] temp = new int[150]; for(int i=0;i<chArr.length;i++){ temp[chArr[i]]++; } int max = 0; for(int j=0;j<temp.length;j++){ if(max<temp[j]){ max = temp[j]; } } StringBuilder sbf = new StringBuilder(); while(max!=0){ for(int j=0;j<temp.length;j++){ if(temp[j] == max){ sbf.append((char)j); } } max--; } System.out.println(sbf.toString()); } } }