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Update 0494.目标和.md

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java代码部分无法通过leetcode提交,需要先判断sum是否可以满足target
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picassoboss
2022-12-30 14:12:01 +08:00
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problems/0494.目标和.md
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@ -270,6 +270,8 @@ class Solution {
public int findTargetSumWays(int[] nums, int target) { public int findTargetSumWays(int[] nums, int target) {
int sum = 0; int sum = 0;
for (int i = 0; i < nums.length; i++) sum += nums[i]; for (int i = 0; i < nums.length; i++) sum += nums[i];
//如果target过大 sum将无法满足
if ( target < 0 && sum < -target) return 0;
if ((target + sum) % 2 != 0) return 0; if ((target + sum) % 2 != 0) return 0;
int size = (target + sum) / 2; int size = (target + sum) / 2;
if(size < 0) size = -size; if(size < 0) size = -size;