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Given an unsorted array of integers nums, find the length of the longest sequence of consecutive elements. Constraints n ≤ 100,000 where n is the length of nums Example …
Given a binary tree root, return whether all leaves are at the same level. Constraints n ≤ 100,000 where n is the number of nodes in root Breadth First …
Given a singly linked list node, and an integer target, delete the last occurrence of target in node. Constraints 0 ≤ n ≤ 100,000 where n is the number …
Given a string digits containing 2 to 9 inclusive, return in sorted lexicographic order all possible strings it could represent when mapping to letters on a phone dialpad. These …
Previously, we know the zip function in Python allows us to take one element from two list or tuple. It kinda acts as the zip_shortest. See below: a = …