java语言实现
合并表记录
http://www.nowcoder.com/questionTerminal/de044e89123f4a7482bd2b214a685201
import java.util.Scanner;
import java.util.Set;
import java.util.TreeMap;
public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in); if (scanner.hasNext()) { Integer integer = Integer.valueOf(scanner.nextLine()); TreeMap<Integer,Integer> treeMap = new TreeMap<>(); for (int i = 0; i < integer; i++) { String[] strings = scanner.nextLine().split(" "); Integer remove = 0; if (treeMap.containsKey(Integer.valueOf(strings[0]))) { remove = treeMap.remove(Integer.valueOf(strings[0])); } treeMap.put(Integer.valueOf(strings[0]) ,Integer.valueOf(strings[1])+ remove); } Set<Integer> integers = treeMap.keySet(); for (Integer integerTemp : integers) { System.out.println(integerTemp+ " " + treeMap.get(integerTemp)); } } }
}