Determine Whether an array is empty
Replace multiples of 5 with NaN
Find the index of the largest value in any vector X=[4,3,4,5,9,12,0,4.....5]
Finding an element in a vector
Check for keywords
generate capital english alphabets
Percentage of zeros in a matrix of only 1s and 0s
Raise each element to the power of its index in a matrix
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