For a given input string str, find how many spaces are there in the string and replace those spaces with *
e.g. str = 'this is demo of replacing spaces with stars';
out = 'this*is*demo*of*replacing*spaces*with*stars'
The Goldbach Conjecture
Compute a dot product of two vectors x and y
Side of an equilateral triangle
Is this triangle right-angled?
Find offset of given matrix element from first matrix element
Create a v-notch vector without "sort" function
Find my birthday
Tax Season ! How much is my salary?
Create a matrix with difference of each row of input matrix
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