Write a python program to check if a number is a perfect number?
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Write a python program to find the second largest number in a list?
Write a function that takes as input a binary tree, and prints out each level of the tree on a newline. For example: a / b c / / d e f will output: a b c d e f
Can you write a program to find the average of numbers in a list in python?
Write a python program to check if a string is a palindrome or not?
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Write a function that takes an unsorted integer array, and returns a three element subset whose sum is zero.
Write a function that takes an array of integers and efficiently calculates and returns the Least Common Multiply in python.
Write a python program to swap the first and last value of a list?
Write a python program to print table of a given number?
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Write a function to efficiently convert a floating point number to a rational number. For example, given 0.125 return "1/8"
Write a python program to check if a number is an armstrong number?