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 if a number is an armstrong number?
Write a python program to check if a number is a palindrome or not?
Write a function that takes an integer and returns the smallest number that is greater than the given number which is a palendrome. For example, if the input was 111 the next palindromic number would be 121.
Write a python program to swap the first and last value of 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 function that takes an unsorted integer array, and returns a three element subset whose sum is zero.
Write a program to find sum of the digits of a number in python?
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 check if a number is a prime number?
How to print sum of the numbers starting from 1 to 100?
What is the output, suppose list1 is [1, 3, 2], what is list1 * 2 ?
Write a python program to check if a string is a palindrome or not?
Write a function to efficiently convert a floating point number to a rational number. For example, given 0.125 return "1/8"
