Show a number with five cards

JavaScript Intermediate alien ages 11-13 From CS Unplugged

The problem

Five binary cards have 16, 8, 4, 2 and 1 dots. A card is either showing its dots (W, white) or turned over (B, black). Write a function binaryCards(n) for a number from 0 to 31. It gives back five letters for the cards, biggest first. Example: 11 is 8 + 2 + 1, so it gives "BWBWW".

You will practice: binary numbers, loops, if / else, building text

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CC BY-SA 4.0

Adapted from a CS Unplugged programming challenge by the University of Canterbury Computer Science Education Research Group, licensed CC BY-SA 4.0.

Original challenge · License: CC BY-SA 4.0

Changes: Rewritten in our own words as a function with tests, hints and steps, in Python and JavaScript, by Open Cosmos. This version is also CC BY-SA 4.0.