hi there,\ni have a one question to ask. i\'m always get confuse in some approach like greedy, knapsack, backtracking, brute-force and etc.\nis there any way to understand all these approach in easy way.\ni have the idea how these are theoritical work but when it comes to code i\'m always get confuse like how an why a particular problem uses a particular approach. \nis there any suggestion or any document where i can understand all of these easily.

hi there,\ni have a one question to ask. i\'m always get confuse in some approach like greedy, knapsack, backtracking, brute-force and etc.\nis there any way to