Hello Programmers/Coders, Today we are going to share solutions of Programming problems of HackerRank of Programming Language Python. At Each Problem with Successful submission with all Test Cases Passed, you will get an score or marks. And after solving maximum problems, you will be getting stars. This will highlight your profile to the recruiters.
In this post, you will find the solution for Input and Output in Python-HackerRank Problem. We are providing the correct and tested solutions of coding problems present on HackerRank. If you are not able to solve any problem, then you can take help from our Blog/website.
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Introduction To Python
Python is a widely-used, interpreted, object-oriented, and high-level programming language with dynamic semantics, used for general-purpose programming. It was created by Guido van Rossum, and first released on February 20, 1991.
Python is a computer programming language often used to build websites and software, automate tasks, and conduct data analysis. It is also used to create various machine learning algorithm, and helps in Artificial Intelligence. Python is a general purpose language, meaning it can be used to create a variety of different programs and isn’t specialized for any specific problems. This versatility, along with its beginner-friendliness, has made it one of the most-used programming languages today. A survey conducted by industry analyst firm RedMonk found that it was the most popular programming language among developers in 2020.
Link for the Problem – Mutations in Python – HackerRank Solution
Mutations in Python – HackerRank Solution
We have seen that lists are mutable (they can be changed), and tuples are immutable (they cannot be changed).
Let’s try to understand this with an example.
You are given an immutable string, and you want to make changes to it.
Example
>>> string = "abracadabra"
You can access an index by:
>>> print string[5] a
What if you would like to assign a value?
>>> string[5] = 'k' Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: 'str' object does not support item assignment
How would you approach this?
- One solution is to convert the string to a list and then change the value.
Example
>>> string = "abracadabra" >>> l = list(string) >>> l[5] = 'k' >>> string = ''.join(l) >>> print string abrackdabra
- Another approach is to slice the string and join it back.
Example
>>> string = string[:5] + "k" + string[6:] >>> print string abrackdabra
Task
Read a given string, change the character at a given index and then print the modified string.
Function Description
Complete the mutate_string function in the editor below.
mutate_string has the following parameters:
- string string: the string to change
- int position: the index to insert the character at
- string character: the character to insert
Returns
- string: the altered string
Input Format
The first line contains a string, .
The next line contains an integer , the index location and a string , separated by a space.
Sample Input
STDIN Function ----- -------- abracadabra s = 'abracadabra' 5 k position = 5, character = 'k'
Sample Output
abrackdabra
Mutations in Python – HackerRank Solution
def mutate_string(string, position, character):
# Mutations in Python - HackerRank Solution START
l = list(string)
l[position] = character;
string = ''.join(l);
return string
# Mutations in Python - HackerRank Solution END
if __name__ == '__main__':
s = input()
i, c = input().split()
s_new = mutate_string(s, int(i), c)
print(s_new)
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