You are given a list of non-negative integers, a1, a2, ..., an, and a target, S. Now you have 2 symbols +and -. For each integer, you should choose one from + and - as its new symbol. Find out how many ways to assign symbols to make sum of integers e…

public class Solution { public int FindTargetSumWays(int[] nums, int S) { Queue<int> Q = new Queue<int>(); Q.Enqueue(); ; var dic = new Dictionary<int, int>(); var dic2 = new Dictionary<int, int>(); ; i < nums.Length; i++) { var…

You are given a list of non-negative integers, a1, a2, ..., an, and a target, S. Now you have 2 symbols + and -. For each integer, you should choose one from + and - as its new symbol. Find out how many ways to assign symbols to make sum of integers…

给定一个非负整数数组,a1, a2, ..., an, 和一个目标数,S.现在你有两个符号 + 和 -.对于数组中的任意一个整数,你都可以从 + 或 -中选择一个符号添加在前面. 返回可以使最终数组和为目标数 S 的所有添加符号的方法数. 示例 1: 输入: nums: [1, 1, 1, 1, 1], S: 3输出: 5解释: -1+1+1+1+1 = 3+1-1+1+1+1 = 3+1+1-1+1+1 = 3+1+1+1-1+1 = 3+1+1+1+1-1 = 3 一共有5种方法让最终目标和…

You are given a list of non-negative integers, a1, a2, ..., an, and a target, S. Now you have 2 symbols + and -. For each integer, you should choose one from + and - as its new symbol. Find out how many ways to assign symbols to make sum of integers…