Given n people, everyone must have pictures taken with everyone, each photo includes only two persons, please count the total number of pictures.
Make a checkerboard matrix
Project Euler: Problem 7, Nth prime
Test if two numbers have the same digits
Matlab Basics - Create a row vector
Vectorizing, too easy or too hard?
given 3 sides, find area of this triangle
Simple spirometer - find your lung capacity from the number and size of soap bubbles in one breath
Given n, create n random numbers such that their standard deviation is also n.
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