7-13 統計工齡 (20 分)
阿新 • • 發佈:2018-12-18
import java.io.BufferedInputStream; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.io.OutputStream; import java.io.OutputStreamWriter; import java.io.PrintWriter; import java.io.StreamTokenizer; import java.util.Arrays; import java.util.Set; import java.util.TreeSet; public class Main{ static StreamTokenizer in = new StreamTokenizer(new BufferedReader(new InputStreamReader(System.in))); static PrintWriter out = new PrintWriter(new OutputStreamWriter(System.out)); static int readInt() throws IOException{ in.nextToken(); return (int)in.nval; } static int maxn = 100005; static int N,num,cnt=0; static int[] a = new int[maxn]; public static void main(String[] args) throws IOException{ N = readInt(); Set<Integer> set =new TreeSet<>(); for(int i=1;i<=N;i++){ num=readInt(); set.add(num); a[num]++; } for(Integer temp : set){ System.out.printf("%d:%d\n",temp,a[temp]); } } }