easyBlind 75
Missing Number
Given an array containing n distinct numbers in range [0, n] Find the one missing number Example: [3,0,1] => 2 (range is 0,1,2,3 - missing 2)
Missing Number is really a boundary-finding problem, even if it doesn't look like it at first. It's a great warm-up that builds boundary precision without a ton of moving parts. Interviewers care more about airtight boundaries than speed here.
Arrays & HashingBinary SearchMath & GeometryBit Manipulation
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1Find Missing Numbereasy
Based onLeetCode