Find the index of a particular character in a string ignoring case.
Input: x = 'aAbhhfdf'
n = 'a'
Output: 1 2
Because in x, at position 1 and 2 , we have a (ignoring case)
You can use regexp
Distance walked 2D
Doubling elements in a vector
Say something funny
length of a vector
Element by element multiplication of two vectors
Check that number is whole number
Is it column vector?
Find out magnitude of vector
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