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GeezerVison is showing github.com — Algorithm/java/coding/findTargetSum.java at master · lelea2/Algorithm Expand file tree/ Copy pathfindTargetSum.javaMore file actions 18 lines (16 loc) · 517 Bytes / Copy pathfindTargetSum.javaFile metadata and controls18 lines (16 loc) · 517 Bytes 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 public class Solution { int result = 0; public int findTargetSumWays(int[] nums, int S) { if (nums == null || nums.length == 0) return result; helper(nums, S, 0, 0); return result; } public void helper(int[] nums, int target, int pos, long eval){ if (pos == nums.length) { if (target == eval) result++; return; } helper(nums, target, pos + 1, eval + nums[pos]); helper(nums, target, pos + 1, eval - nums[pos]); } } |
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