Find the palindrome numbers (two or more digits) from 1 to n where n is the number passed to the function.
Problem asks for palindromes starting at 1, but test cases start at 100.
Now it goes down to 10, but wouldn't single digits be considered palindromes as well?
Additional test cases were added and the description slightly enhanced.
Extract leading non-zero digit
It dseon't mettar waht oedrr the lrettes in a wrod are.
Increment a number, given its digits
peta to nano (x-ray)
Sum of diagonal of a square matrix
Find the square of the sum of the digits of a number
Concatenate two strings
Find the area of the four walls
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