Learn how to detect a loop in a linked list. Code in C, Java and Python with explanation.

Learn Karatsuba algorithm to multiply large numbers quickly.

Learn how to parse different expressions like prefix, postfix and infix expressions.

Remove duplicate elements from a sorted array using two methods with code in C, Python and Java.

Learn to get the longest common subsequence in a string using memoization and brute force.

Learn the algorithm to solve tower of Hanoi problem. Codes in C, Java and Python with explanation.