algorithm

Next Permutation-Leetcode 31 Solution

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The Next Permutation problem (LeetCode #31) involves rearranging a sequence of numbers into its next lexicographical permutation. If the sequence is already the largest possible permutation, it should be rearranged into the smallest (sorted in ascending order). Below is a detailed breakdown of the approaches to solve this problem, from naive to optimal, with Java … Read more

Swap Nodes in Pairs – LeetCode 24 Solution

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If you’re a LeetCode enthusiast or just starting out, you might have encountered the problem Swap Nodes in Pairs (LeetCode 24). This is a classic problem that involves swapping adjacent nodes in a linked list. Understanding how to solve this problem is crucial for mastering linked list manipulation and performing well in coding interviews. In … Read more