Picking Numbers | Python Solution | HackerRank

Given an array of integers, find the longest subarray where the absolute difference between any two elements is less than or equal to .

Example

There are two subarrays meeting the criterion:  and . The maximum length subarray has  elements.

Cats and a Mouse | Python Solution | HackerRank

 Two cats and a mouse are at various positions on a line. You will be given their starting positions. Your task is to determine which cat will reach the mouse first, assuming the mouse does not move and the cats travel at equal speed. If the cats arrive at the same time, the mouse will be allowed to move and it will escape while they fight.

You are given  queries in the form of , , and  representing the respective positions for cats  and , and for mouse . Complete the function  to return the appropriate answer to each query, which will be printed on a new line.

• If cat  catches the mouse first, print Cat A.
• If cat  catches the mouse first, print Cat B.
• If both cats reach the mouse at the same time, print Mouse C as the two cats fight and mouse escapes.

Electronics Shop | Python Solution | HackerRank

 A person wants to determine the most expensive computer keyboard and USB drive that can be purchased with a give budget. Given price lists for keyboards and USB drives and a budget, find the cost to buy them. If it is not possible to buy both items, return .

Example

The person can buy a , or a . Choose the latter as the more expensive option and return .

Function Description

Complete the getMoneySpent function in the editor below.

getMoneySpent has the following parameter(s):

• int keyboards[n]: the keyboard prices
• int drives[m]: the drive prices
• int b: the budget

Counting Valleys | Python Solution | HackerRank

 An avid hiker keeps meticulous records of their hikes. During the last hike that took exactly  steps, for every step it was noted if it was an uphill, , or a downhill,  step. Hikes always start and end at sea level, and each step up or down represents a  unit change in altitude. We define the following terms:

• A mountain is a sequence of consecutive steps above sea level, starting with a step up from sea level and ending with a step down to sea level.
• A valley is a sequence of consecutive steps below sea level, starting with a step down from sea level and ending with a step up to sea level.

Given the sequence of up and down steps during a hike, find and print the number of valleys walked through.