Generate vector according to sign of vector
Example: If A=[-2 0 5] then output must be[-1 0 1]
meaning that for negative number,value is -1.
meaning that for Positive number,value is 1. and for zero is 0.
Test for balanced parentheses
Remove NaN ?
Set the array elements whose value is 13 to 0
Flip the vector from right to left
Create a Matrix of Zeros
Compute LOG(1+X) in natural log
Change the first and last diagonal element of the identity matrix to zero
Find out sum of prime number till given number
Find out base of following arithmetic operation
Find out output of following expression
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