DAY 41 OF 90 · Know when to stop

How many digits

Easy90 Days of Looping

Inputs

n is a whole number from 0 to 1,000,000.

Your tasks

Create a number count that starts at 0 and a copy rest of n.
Use a while loop that runs as long as rest is more than 0. Each round, throw away the last digit of rest (whole-number divide by 10) and add 1 to count.
Complete digitCount so it returns count. Return it, do not print it.

Example

With n = 4821, digitCount returns 4.

Rules

0 has one digit, so return 1 for 0.
Do not turn the number into text.

Test data

TEST DATA 1: n is 4821

TEST DATA 2: n is 0

Practice focus

While loops and early exits, for when you don't know how many rounds you need. Binary search, the Euclidean algorithm and graph search are all while loops with a clear stopping rule.

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