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.

Drawing Book | Python Solution | HackerRank

 A teacher asks the class to open their books to a page number. A student can either start turning pages from the front of the book or from the back of the book. They always turn pages one at a time. When they open the book, page  is always on the right side:

When they flip page , they see pages  and . Each page except the last page will always be printed on both sides. The last page may only be printed on the front, given the length of the book. If the book is  pages long, and a student wants to turn to page , what is the minimum number of pages to turn? They can start at the beginning or the end of the book.

Given  and , find and print the minimum number of pages that must be turned in order to arrive at page .

Example

Using the diagram above, if the student wants to get to page , they open the book to page , flip  page and they are on the correct page. If they open the book to the last page, page , they turn  page and are at the correct page. Return .