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g0001_0100.s0040_combination_sum_ii.readme.md Maven / Gradle / Ivy

40\. Combination Sum II

Medium

Given a collection of candidate numbers (`candidates`) and a target number (`target`), find all unique combinations in `candidates` where the candidate numbers sum to `target`.

Each number in `candidates` may only be used **once** in the combination.

**Note:** The solution set must not contain duplicate combinations.

**Example 1:**

**Input:** candidates = [10,1,2,7,6,1,5], target = 8

**Output:** [ [1,1,6], [1,2,5], [1,7], [2,6] ]

**Example 2:**

**Input:** candidates = [2,5,2,1,2], target = 5

**Output:** [ [1,2,2], [5] ]

**Constraints:**

*   `1 <= candidates.length <= 100`
*   `1 <= candidates[i] <= 50`
*   `1 <= target <= 30`