Given a string S, return the index of any numeric characters.
S = 'The next meeting will be held in 2 weeks.';
idx = find_numeric(S);
So, idx = 34 in the example.
Summing Digits within Text
Sum the numbers on the main diagonal
05 - Vector Equations 1
Find out total non zero element of matrix
Sum of series I
Find Pseudo-Cyclic Number
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