Problem 48. Making change

Created by Cody Team

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Given an amount of currency, return a vector of this form:
 [100 50 20 10 5 2 1 0.5 0.25 0.1 0.05 0.01]
Example:
 Input a = 257.68
 Output b is [2 1 0 0 1 1 0 1 0 1 1 3]
Always use bigger bills/coins if possible.

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Last Solution submitted on Apr 19, 2025

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try12345 on 31 Jan 2014

whoa..rounding error uncovered

Alvery on 14 Jul 2014

Also, "round(X,N)" gives an error - almost like it couldn't have a 2nd parameter

Jerivington on 2 Jun 2016

Great problem, not too hard but required a bit of thinking

shahriar memaran on 27 Feb 2017

It took me a long time (before reading the comments !!!) to figure out that for instance the result for rem(135.01,100) is not 35.01 but is 35.009999999999991.
Can anyone help me with why the issue is there and how to solve it (not by adding 1e-3)!?

Shivam Jauhar on 25 Apr 2017

good job! i enjoyed solving this code

Luyu Wang on 6 Jul 2018

I cannot understand this problem. what means?

Serhii Tetora on 9 Jan 2019

Why function roundn is undefined?

Brandon on 23 Jun 2023

A lot of people are adding an amount smaller than a cent to the input to get around floating point issues. There are two other ways to get around this. One is to make the last cent 0.00999 instead. The other is to change your comparison line to compare against a slightly smaller/larger value.

Reuben on 14 Nov 2024

my first floating point issue, yay

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Problem 48. Making change

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Problem 48. Making change

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