- [Binary Search](https://youtu.be/f6UU7V3szVw)

- [Guess Number Higher or Lower(Easy)](https://leetcode.com/problems/guess-number-higher-or-lower/)

- [First Bad Version(Easy)](https://leetcode.com/problems/first-bad-version/)

- [Two Sum II - Input array is sorted(Easy)](https://leetcode.com/problems/two-sum-ii-input-array-is-sorted/)

- [Valid Perfect Square(Easy)](https://leetcode.com/problems/valid-perfect-square/)

- [Arranging Coins(Easy)](https://leetcode.com/problems/arranging-coins/)

- [Find Smallest Letter Greater Than Target(Easy)](https://leetcode.com/problems/find-smallest-letter-greater-than-target/)

- [Kth Missing Positive Number(Easy)](https://leetcode.com/problems/kth-missing-positive-number/)

- [Search Insert Position(Easy)](https://leetcode.com/problems/search-insert-position/)

- [Count Negative Numbers in a Sorted Matrix(Easy)](https://leetcode.com/problems/count-negative-numbers-in-a-sorted-matrix/)

- [Find First and Last Position of Element in Sorted Array(Medium)](https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array/)

- [Single Element in a Sorted Array(Medium)](https://leetcode.com/problems/single-element-in-a-sorted-array/)

- [Search in Rotated Sorted Array(Medium)](https://leetcode.com/problems/search-in-rotated-sorted-array/)

- [Search in Rotated Sorted Array II(Medium)](https://leetcode.com/problems/search-in-rotated-sorted-array-ii/)

- [Find Peak Element(Medium)](https://leetcode.com/problems/find-peak-element/)

- [Search a 2D Matrix(Medium)](https://leetcode.com/problems/search-a-2d-matrix/)

- [Reach a Number(Medium)](https://leetcode.com/problems/reach-a-number/)

- [Koko Eating Bananas(Medium)](https://leetcode.com/problems/koko-eating-bananas/)