A monotonic array is an array whose elements, from left to right, are entirely non-increasing, or entirely non-decreasing. Return true if the given array is monotonic.

Monotonic Arrays

Given an array of integers, find three integers in the array that sum to a specific target number.

Three Number Sum

Given an array of sorted integers in ascending order, and a target integer, write a function to search target in nums array. If target exists, return the index of the target in the array, otherwise return -1.


Binary Search

Given a string of alphabets (from a to z), Print the count of the character appearing in the string right next to it. This is also called Run Length Encoding or String Compression.

String Compression

Construct a Binary Search Tree and implement that implements insert, search, traverse and delete methods.

searching

Monotonic Arrays

Three Number Sum

Binary Search

String Compression

BST Construction

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