解题思路:
注意事项:
参考代码:
import java.util.ArrayList; import java.util.Collections; import java.util.Comparator; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.Scanner; public class C1598 { public static void main(String[] args) { Scanner sc = new Scanner(System.in); while (sc.hasNext()) { int n = sc.nextInt(); List<Map<String, Object>> list = new ArrayList<Map<String, Object>>(); for(int i = 0; i < n; i++){ Map<String, Object> map = new HashMap<String, Object>(); map.put("name", sc.next()); map.put("sex", sc.next()); map.put("age", sc.nextInt()); map.put("score", sc.nextInt()); list.add(map); } Collections.sort(list, new Comparator<Map<String, Object>>(){ @Override public int compare(Map<String, Object> o1, Map<String, Object> o2) { return (Integer)o1.get("score") - (Integer)o2.get("score"); } }); for(int i = 0; i < n; i++){ Map<String, Object> map = list.get(i); System.out.printf("%s %s %d %d\n", map.get("name"), map.get("sex"), map.get("age"), map.get("score")); } } sc.close(); } }
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