Solution: Coin Change
Explore how to solve the coin change problem using dynamic programming. Understand why a greedy approach fails and how to use memoization to efficiently find the minimum number of coins needed to reach a target amount. This lesson guides you through building and implementing the solution for optimal performance and clarity.
Statement
Given an integer total that represents the target amount of money and a list of integers coins that represents different coin denominations, find the minimum number of coins required to make up the total amount. If it’s impossible to achieve the target amount using the given coins, return -1. If the target amount is 0, return 0.
Note: You can assume that we have an infinite number of each kind of coin.
Constraints:
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coins.length -
coins[i] -
...