LeetCode Day 23 - Bitwise AND of Numbers Range

A coding interview problem for today is: return the bitwise AND of all numbers in range [L, R]. I first guessed the statement incorrectly and started explaining something unrelated :D
Consider watching my Bitwise Operations tutorial    • Bitwise Operations tutorial #1 | XOR,...  
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...

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