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
Maximum running product for a string of numbers
Alphabetize by last name
Omit columns averages from a matrix
Sum the elements in either diagonal of a square matrix
Transpose of matrix
remove numbers from a string
The Dark Knight
Most Frequent Word - 01
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