How do you set a global variable inside a function?
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Discuss an algorithm to traverse a tree, depth first.
Write a python program to check if a number is a perfect number?
Given a N by N matrix of both negative and positive integers. Write an efficient algorithm to find the sub-matrix with the largest sum of all the contained elements.
Write a python program to check common letters in two input strings?
how are functions defined in python ?
Can you write a program to find the average of numbers in a list in python?
Write a simple "Hello User" python code snippet.
The sum of three numbers is 20. The second number is 4 times the first number , and the sum of the first and third is8. Find the numbers.
Write a python program to check if a string is a palindrome or not?
Write a function that takes an array of integers and returns that array rotated by N positions. For example, if N=2, given the input array [1, 2, 3, 4, 5, 6] the function should return [5, 6, 1, 2, 3, 4]
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
Given a circular list of integers (when you reach the end of the list you come back to the beginning), what is the most efficient algorithm to find the smallest integer in the list? For example: circular_list = [22, 52, 66, 82, 5, 8, 12, 19].