Showing 3 of 46 questions
Determine if it is possible to finish all courses given prerequisites. Some courses must be taken before others; can you find a valid order?
#1. Course Schedule
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
Determine the fewest modifications needed to transform a binary string into an alternating pattern (e.g., "0101" or "1010"). You can change '0' to '1' or '1' to '0'.
#3. Minimum Changes To Make Alternating Binary String