Nov 26, 2012 · 104 I understand how the greedy algorithm for the coin change problem (pay a specific amount with the minimal possible number of coins) works - it always selects the coin with the largest …

Jun 2, 2020 · The second design flaw is that the greedy algorithm isn't optimal for some instances of the coin change problem. The code has an example of that. When amount is 20 and the coins are …

Jul 28, 2012 · Let's take for example the problem of making change for a dollar using coins of 1, 5, 10 and 25 cents; a dollar is 100 cents. The greedy algorithm always takes the biggest possible coin.

May 17, 2011 · The minimum coin change problem is an NP-complete problem but for certain sets of coins the greedy algorithm (choose largest denominations first) works. Given a set of integers …

Oct 16, 2010 · 64 Recently I challenged my co-worker to write an algorithm to solve this problem: Find the least number of coins required that can make any change from 1 to 99 cents. The coins can only …

Nov 14, 2018 · I'm trying to figure out the time complexity of a greedy coin changing algorithm. (I understand Dynamic Programming approach is better for this problem but I did that already).

I think the term for coin-sets for which the greedy algorithm does work is a "friendly coin set." It is an interesting problem to determine whether or not a coin set is friendly. I could have the term wrong but …

Jan 31, 2015 · Real-life change-making is only more specific than the knapsack problem because national currencies (U.S. coins, for example) have special properties. Those properties might let you …

Sep 5, 2020 · To make 6 out of [1, 3, 4], the greedy algorithm will use 4+1+1 = 3 coins, where the optimal solution (minimum coins) would be 3 + 3 = 2 coins = not canonical. Your example, [1, 2, 3, 6] …

May 9, 2015 · If we have only quarters, dimes, and pennies (and no nickels) to use, the greedy algorithm would make change for 30 cents using six coins —a quarter and five pennies—whereas …