Count total number of digits from 1 to n.
since from [1-9] total 9 digits.[10-13] total 4*2=8 digits.
In the 5th test case there is number n=10000675820025; which is very large number MATLAB is not accepting to get number from 1 to 10000675820025;
that means u need to find some alternate way to solve
Implement a ROT13 cipher
Magic is simple (for beginners)
Right Triangle Side Lengths (Inspired by Project Euler Problem 39)
Equal to their cube
Is it column vector?
Generate Golomb's sequence
Last non-zero digit
generate the matrix
How many ways?
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