How to Solve Combination Sum I V Problem
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Combination Sum IV
Given an array of distinct integers nums and a target integer target, return the number of possible combinations that add up to target. The test cases are generated so that the answer can fit in a 32-...
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Understanding the Combination Sum I V Problem
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Problem Statement
Given an array of distinct integers nums and a target integer target, return the number of possible combinations that add up to target. The test cases are generated so that the answer can fit in a 32-bit integer.
Combination Sum IV
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Examples
nums = [1,2,3], target = 47The possible combination ways are: (1, 1, 1, 1) (1, 1, 2) (1, 2, 1) (1, 3) (2, 1, 1) (2, 2) (3, 1) Note that different sequences are counted as different combinations.
nums = [9], target = 30Constraints
1 <= nums.length <= 2001 <= nums[i] <= 1000All the elements of nums are unique.1 <= target <= 1000Follow up: What if negative numbers are allowed in the given array? How does it change the problem? What limitation we need to add to the question to allow negative numbers?How Interview Coder Helps with Leetcode Problems
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