Showing 3 questions
Find all unique combinations of numbers from a given array that sum up to a specific target value. You can use the same number multiple times.
#1. Combination Sum
Find the length of the longest substring within a given string that contains no repeating characters. The substring must be contiguous.
#2. Longest Substring Without Repeating Characters
You're given two sorted lists. Combine them into a single sorted list containing all elements from both original lists.
#3. Merge Two Sorted Lists