Given a array of elements representing colors using integers 0 (red), 1 (white), and 2 (blue), the task is to sort them in-place without using built-in sorting functions. The sorted array should group identical colors together in red-white-blue order. Two-Pass Pointer Approach This method processes...
Problem Statement Given a sorted integer array nums, remove duplicates in-place sothat each unique element appears no more than twice. Return the new length of the array. Key constraints: Must modify the input array in-place Space complexity must be O(1) The function receives the array by reference...
The task requires identifying, for each given range [start, end], another range whose starting point is greater than or equal to the current range's ending point. Among all valid candidates, the one with the smallest starting value must be selected. The original index of this matching range is retur...