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Copy pathStack_1.java
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39 lines (31 loc) · 931 Bytes
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package HuaweiCoding;
import java.util.Map.Entry;
import java.util.Scanner;
import java.util.TreeMap;
/*
* 数据表记录包含表索引和数值，
* 请对表索引相同的记录进行合并，
* 即将相同索引的数值进行求和运算，
* 输出按照key值升序进行输出。
*/
public class Stack_1 {
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
while(sc.hasNext()) {
int num = sc.nextInt();
TreeMap<Integer, Integer> treeMap=new TreeMap<>();
for(int i=0;i<num;i++) {
int key = sc.nextInt();
int value = sc.nextInt();
if(treeMap.containsKey(key)) {
treeMap.put(key, treeMap.get(key)+value);
}else {
treeMap.put(key, value);
}
}
for (Entry<Integer,Integer> keyValues: treeMap.entrySet()) {
System.out.println(keyValues.getKey()+" "+keyValues.getValue());
}
}
}
}