swimming.py ----- Fall for code 3.0 @codechef

Min_path.py ----- """""""""""""""""""""""""""

dp_even_palin_working.py ----- Find longest even palindromic substring with no same adjacent characters except for the middle ones, @codenation test.

max_profit_3 ----- Space complexity reduced from O(n*transactions) to O(transactions) using flag toggling.

Count_Palindromic_paths_in_matrix.py ---- https://www.geeksforgeeks.org/number-of-palindromic-paths-in-a-matrix/

alien_dictionary.py --- https://practice.geeksforgeeks.org/problems/alien-dictionary/1

Minimum_Cost_Path_matrix_djikstra.py ---https://www.geeksforgeeks.org/minimum-cost-path-left-right-bottom-moves-allowed/

Chain_of_strings.py --- find whether a circular chain of strings can be made. https://practice.geeksforgeeks.org/problems/circle-of-strings/0/