given a number of consecutive moves of queen, check for their validity based on their previous position....
but remember if u get an invalid move - u need check for the next move's validity based on the last valid position.....
Finding Perfect Squares
Sort a list of complex numbers based on far they are from the origin.
Find the palindrome
Doubling elements in a vector
An n-sided regular polygon is drawn within a circle whose radius is 'r', what will be the area of the polygon?
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