hardTwo PointersPattern: Two Pointers Search
Triplet Sum With Middle Element Constraint Solution
Problem Statement
You are given an array of integers `numbers` and a target sum `target`. Find all unique triplets in the array that add up to the `target` sum, where the middle element of the triplet is at most the sum of the two other elements.
Examples
Example 1:
Input:{"numbers":[12345],"target":6}
Output:[[123]]
Explanation: The triplet [1,2,3] is a valid solution because 1 + 2 + 3 = 6 and 2 <= 1 + 3.
Constraints
- All elements in the array will be unique.
- The array will have at least two elements.
- The target sum will be greater than any element in the array.
Time: O(n^2) Space: O(n)
Analyze constraints and compute optimal solutions step-by-step.
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