Map排序，Stream流
import java.util.*;
import java.util.Scanner;
import java.util.stream.Collectors;
public class Main {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
int n = in.nextInt();
int manger = in.nextInt();
Map<String,Integer> map = new LinkedHashMap<>();
for(int i=0; i<n; i++){
map.put(in.next(),in.nextInt());
}
Map<String,Integer> map_new;
if(manger == 0){
map_new = map.entrySet().stream().sorted(Collections.reverseOrder(Map.Entry.comparingByValue())).collect(
Collectors.toMap(
Map.Entry :: getKey,
Map.Entry :: getValue,
(oldVal, newVal) ->oldVal,
LinkedHashMap::new
)
);
} else {
map_new = map.entrySet().stream().sorted(Collections.reverseOrder(Map.Entry.<String,Integer>comparingByValue()).reversed()).collect(
Collectors.toMap(
Map.Entry :: getKey,
Map.Entry :: getValue,
(oldVal, newVal) ->oldVal,
LinkedHashMap::new
)
);
}
map_new.forEach((k,v) -> System.out.println(k + " " + v));
}
}
