Narcissistic number is a number that is the sum of its own digits each raised to the power of the number of digits.
153 = 1^3 + 5^3 + 3^3
101 ~= 1^3 + 0 ^3 + 1^3
Number of 1s in a binary string
Get the length of a given vector
Angle between Two Vectors
Sum of odd numbers in a matrix
Put m balls into n boxes
Find the maximum two numbers of every column of a matrix
Determine if input is a perfect number
Compute the intersect point of line and plan
Return fibonacci sequence do not use loop and condition version 2
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