In the test cases you wrote "your_fcn_name(x)" and not "your_fcn_name(x1,x2)" ;-)
Duplicate of 2081
This user (ALBERT ALEXANDER STONIER) appears to have gamed the system, with fraudulent "likes" of this unremarkable solution submitted by 'sock-puppet' accounts. —DIV
please improve test suite
Swap the first and last columns
Increment a number, given its digits
Number of toolboxes?
Calculate the area of a triangle between three points
Reverse a matrix
Find the square of the sum of the digits of a number
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