easyArraysPattern: Two Pointers
Complementary Energy Pairs Solution
Problem Statement
You are given an array of integers representing energy levels. Find all pairs of nodes with energy levels that add up to 27.
Examples
Example 1:
Input:[10, 17, 12, 15, 20]
Output:[[10, 17], [12, 15]]
Explanation: Pairs with energy levels that add up to 27.
Constraints
- The input array is sorted in ascending order.
- Each element in the input array is an integer.
- The output array should be sorted in ascending order.
Time: O(n log n) Space: O(n)
The optimized approach would involve using a hashmap to store the frequency of each energy level, allowing for a solution with a time complexity of O(n)
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