Angry Professor | Python Solution | HackerRank

 A Discrete Mathematics professor has a class of students. Frustrated with their lack of discipline, the professor decides to cancel class if fewer than some number of students are present when class starts. Arrival times go from on time () to arrived late ().

Given the arrival time of each student and a threshhold number of attendees, determine if the class is cancelled.

Example

The first  students arrived on. The last  were late. The threshold is  students, so class will go on. Return YES.

Note: Non-positive arrival times () indicate the student arrived early or on time; positive arrival times () indicate the student arrived  minutes late.

Utopian Tree | Python Solution | HackerRank

 The Utopian Tree goes through 2 cycles of growth every year. Each spring, it doubles in height. Each summer, its height increases by 1 meter.

A Utopian Tree sapling with a height of 1 meter is planted at the onset of spring. How tall will the tree be after  growth cycles?

For example, if the number of growth cycles is , the calculations are as follows:

Period  Height
0          1
1          2
2          3
3          6
4          7
5          14

Designer PDF Viewer | Python Solution | HackerRank

 When a contiguous block of text is selected in a PDF viewer, the selection is highlighted with a blue rectangle. In this PDF viewer, each word is highlighted independently. For example:

There is a list of  character heights aligned by index to their letters. For example, 'a' is at index  and 'z' is at index . There will also be a string. Using the letter heights given, determine the area of the rectangle highlight in  assuming all letters are  wide.

The Hurdle Race | Python Solution | HackerRank

 A video player plays a game in which the character competes in a hurdle race. Hurdles are of varying heights, and the characters have a maximum height they can jump. There is a magic potion they can take that will increase their maximum jump height by  unit for each dose. How many doses of the potion must the character take to be able to jump all of the hurdles. If the character can already clear all of the hurdles, return .

Example

The character can jump  unit high initially and must take  doses of potion to be able to jump all of the hurdles.

Function Description

Complete the hurdleRace function in the editor below.

hurdleRace has the following parameter(s):

• int k: the height the character can jump naturally
• int height[n]: the heights of each hurdle

Climbing the Leaderboard | Python Solution | HackerRank

 An arcade game player wants to climb to the top of the leaderboard and track their ranking. The game uses Dense Ranking, so its leaderboard works like this:

• The player with the highest score is ranked number  on the leaderboard.
• Players who have equal scores receive the same ranking number, and the next player(s) receive the immediately following ranking number.

Example

The ranked players will have ranks , , , and , respectively. If the player's scores are ,  and , their rankings after each game are ,  and . Return .