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Articles tagged with #problem-solving-skills
Problem Statement Given a linked list, swap every two adjacent nodes and return its head. You must solve the problem without modifying the values in the list’s nodes (i.e., only the nodes themselves may be changed). Example: codeInput: head = [1,2,3,...
Problem Statement: Given a string s, find the length of the longest substring without repeating characters. Examples: Input: s = "abcabcbb" Output: 3 Explanation: The answer is "abc", with the length of 3. codeInput: s = "bbbbb" Output: 1 Explanatio...
Problem Statement Given a binary tree and a target sum, find all root-to-leaf paths where the sum of the node values in the path equals the target sum. Each path should be represented as a list of integers from the root to the leaf. Example: codeInpu...
Problem Statement: You are given the heads of two sorted linked lists list1 and list2. Merge the two lists in a way that the resulting list is also sorted and return the head of the merged linked list. Examples: Input: list1 = [1,2,4], list2 = [1,3,4...
