Change-Making Problem

The change-making problem involves finding the best way to give someone a specific amount of money using the fewest coins or bills possible. For example, if you need 87 cents, the problem is to determine the fewest coins—like quarters, dimes, nickels, and pennies—that add up to that total. It's about efficiently combining available currency to meet a target sum while minimizing the number of units used, which has applications in cash transactions, vending machines, and currency systems.