The problem says the input is a positive integer but the first test inputs 0. In my code that caused r = 0/0 error. Please change the wording to "input is non-negative".
Swap the first and last columns
Find state names that end with the letter A
MATCH THE STRINGS (2 CHAR) very easy
Convert given decimal number to binary number.
Vector of numbers divisible by 3
Return area of square
How many digits are there?
Volume and area of a sphere
Number of odd and even elements within matrix
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