One of the Tricky Math Dynamic Programming Questions in Google Interviews

LeetCode 518, "Coin Change II," asks for the number of combinations that make up a given amount of money, using a set of distinct coins an unlimited number of times.

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Time Complexity = O(2^n), where 'n' is the length of the input array

This approach can be further optimized with memoization and tabulation

Space Complexity = O(n), where 'n' is the length of the input array

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