LeetCode Day 21 - Interactive Grid (Leftmost Column with 1)

Every row of a grid has some number of 0's first and then 1's (so it's sorted). By asking queries about value of a cell, find out the leftmost column with at least one value 1. We can use binary search or something faster! Explanation of random order solution: https://codeforces.com/blog/entry/62602 Leetcode holds a 30-day Challenge in April with a new coding interview problem appearing each day, here's contest link: https://leetcode.com/explore/featured... Subscribe for more educational videos on algorithms, coding interviews and competitive programming. Github repository: https://github.com/Errichto/youtube Live streams on 2nd YT channel and on Twitch:    / errichto2   &   / errichto   FB and Twitter:   / errichto   &   / errichto   Frequently Asked Questions: https://github.com/Errichto/youtube/w... #Coding #Programming