s='He was so tired'
ans = true
Maximum running product for a string of numbers
How to find the position of an element in a vector without using the find function
2 b | ~ 2 b
Find the sum of the negative elements under the main diagonal.
Return ! if array element starts with a certain letter. Otherwise return ?
Find the product of the positive elements above the main diagonal.
Calculate the centroid of a triangle
Solve the system of equations.
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