Python
Keep only certain columns in a dataframe
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This technical problem deals with how to keep only certain columns in a dataframe using Python. A function is provided that takes in a dataframe and a list of column names, and returns a new dataframe with only the columns in the list. An example is given of input and output.
Tower of Hanoi Algorithm
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The goal of the Tower of Hanoi algorithm is to move a stack of disks from one peg to another, without ever placing a larger disk on top of a smaller disk. The input will consist of the starting peg, the goal peg, and the number of disks. The output should consist of a series of instructions on how to move the disks from the starting peg to the goal peg .
Tower of Hanoi
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The Tower of Hanoi problem is a classic algorithmic puzzle that can be solved using a simple recursive algorithm. Given a stack of n disks, the algorithm moves the disks from the first stack to the last stack, using only three stacks and moving only one disk at a time. The disks must be moved so that the smallest disk is on top of the largest disk.
Adjacent Integer Sums in Python
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This problem asks the programmer to write a function that returns the largest sum that can be generated by adding together any two adjacent integers in a given list. An example input and output is given.
Get the title of a given URL.
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This technical problem deals with scraping the title from a given URL. An example input and output is provided.
Is This a Magic Square?
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The function checks if the given 3x3 grid of numbers is a magic square or not. A magic square is a 3x3 grid of numbers where each row, column, and diagonal sum to the same number.
Checking if a Square Matrix is a Magic Square
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This technical problem deals with writing a function that takes in an n x n matrix representing a magic square and returns True if the square is magic, and False otherwise. A magic square is a square matrix in which the sum of the elements in each row, column, and diagonal is the same.
Is this a valid magic square?
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The problem is to check whether a given 2D array of integers is a valid magic square. A magic square is a square array of integers where the sum of each row, column, and diagonal is the same.
