思路:遍历过程中,将值和下标存入Map中
import java.util.*;
public class Solution {
/**
*
* @param numbers int整型一维数组
* @param target int整型
* @return int整型一维数组
*/
public int[] twoSum (int[] numbers, int target) {
// write code here
Map<Integer,Integer> map = new HashMap<>();
int[] res = new int[2];
for(int i=0;i<numbers.length;i++){
if(map.containsKey(target-numbers[i])){
res[0] = map.get(target-numbers[i])+1;
res[1] = i+1;
break;
}else{
map.put(numbers[i],i);
}
}
return res;
}
}