Didn't really understand the problem right from reading the task itself, but from reading the test cases. Really fun problem though. First time I used regexprep function, so I learned a lot!
The problem asks to "add" a zero, no mention of append or prepend! Nice general solution though, and a new trick learned ($&0)
I feel I've overcomplicated my solution
regexprep(x, '(?(?=0[^0]|0$)0|)', '00')
I didn't know about $0! Nifty.
Neither did I! Matlab has great help.
The solution is not correct for the generalized case. 0$0 does a pre-pend of 0 not an append. The correct general solutions is either $00, or better to avoid operator ($0) confusion with the test set using 0s is operator ($%) $&0.
The solution is not correct for the generalized case. 0$0 does a pre-pend of 0 not an append. The correct general solutions is either $00, or better to avoid operator ($0) confusion with the test set using 0s is operator ($&) $&0. (Typo in prior comment)
Clean the List of Names
What is the distance from point P(x,y) to the line Ax + By + C = 0?
02 - Vector Variables 2
03 - Matrix Variables 1
Without the French accent please!
Generalised Hamming Number
Pandigital number n°2 (Inspired by Project Euler 32)
Rank of magic square (for beginners)
Recycled Numbers (CodeJam Qualification Round 2012)
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