Counting Sort 2 HackerRank Solution in C, C++, Java, Python
Comparison Sorting Quicksort usually has a running time of n*log(n), but is there an algorithm that can sort even faster? In general, this is not possible. Most sorting algorithms are …
Aayush Kumar Gupta
Funny String HackerRank Solution in C, C++, Java, Python
In this challenge, you will determine whether a string is funny or not. To determine whether a string is funny, create a copy of the string in reverse e.g.abc->cba . …
Weighted Uniform Strings HackerRank Solution in C, C++, Java, Python
A weighted string is a string of lowercase English letters where each letter has a weight. Character weights are 1 to 26 from a to z as shown below: The …
Pangrams HackerRank Solution in C, C++, Java, Python
A pangram is a string that contains every letter of the alphabet. Given a sentence determine whether it is a pangram in the English alphabet. Ignore case. Return either pangram …
Quicksort 1 – Partition HackerRank Solution in C, C++, Java, Python
The previous challenges covered Insertion Sort, which is a simple and intuitive sorting algorithm with a running time of O(n^2). In these next few challenges, we’re covering a divide-and-conquer algorithm …
HackerRank in a String! HackerRank Solution in C, C++, Java, Python
We say that a string contains the word hackerrank if a subsequence of its characters spell the word hackerrank. Remember that a subsequence maintains the order of characters selected from …
Running Time of Algorithms HackerRank Solution in C, C++, Java, Python
In a previous challenge you implemented the Insertion Sort algorithm. It is a simple sorting algorithm that works well with small or mostly sorted data. However, it takes a long …
Mars Exploration HackerRank Solution in C, C++, Java, Python
A space explorer’s ship crashed on Mars! They send a series of SOS messages to Earth for help. Letters in some of the SOS messages are altered by cosmic radiation …
Caesar Cipher HackerRank Solution in C, C++, Java, Python
In Insertion Sort Part 1, you inserted one element into an array at its correct sorted position. Using the same approach repeatedly, can you sort an entire array? Guideline: You …
Two Characters HackerRank Solution in C, C++, Java, Python
Given a string, remove characters until the string is made up of any two alternating characters. When you choose a character to remove, all instances of that character must be …