Discuss an algorithm to traverse a tree, depth first.

1647

Write a function to efficiently convert a floating point number to a rational number. For example, given 0.125 return "1/8"

1520

Write a python program to check if a number is a strong number?

800

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

1740

What is the output when we execute list(“hello”)?

970

What is the output, suppose list1 is [1, 3, 2], what is list1 * 2 ?

1344

Write a python program to check common letters in two input strings?

783

Write a python program to check if a number is a perfect number?

867

Write a function that takes an unsorted integer array, and returns a three element subset whose sum is zero.

1611

Write a program to reverse a number in python?

784

Write a python program to count the number of digits in a number?

844

Write a python program to check if a number is a prime number?

794

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.

1663

Write a python program to check if a string is a palindrome or not?

817

Write a python program to check if a number is an armstrong number?

743