leetcode exersizes
- Monotonic Array @2019-01-07
- kth-largest-element-in-an-array @2019-01-07
- binary-subarrays-with-sum @2019-01-08
- delete-node-in-a-bst @2019-01-09
- path-sum-iii @2019-01-09
- minimum-moves-to-equal-array-elements @2019-01-10
- optimal-division @2019-01-10
- accounts-merge @2019-01-16