very cool question: learn some new tricks, and get 10 points, why not?!
Hint to spare the pain : string(NaN)==
given 3 sides, find area of this triangle
intersection of matrices
Who invented zero?
Find nth maximum
Toeplitize a matrix
Fast 1-D Convolution (valid shape)
Words Count: A String Array Approach
Cody meets Xiangqi: foresee the unseen (Part 2)
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