Finding The Percentage in Python | HackerRank Solution

Hey coders, today we are going to solve Finding The Percentage in Python Hacker Rank Solution.

Task

The provided code stub read in a dictionary containing key/value pairs of name:[Marks] for a list of students. Print the average of the marks array for the student name provided, showing 2 places after the decimal.

Example

marks key: value pairs are
‘alpha’:[20, 30, 40]
‘beta’:[30, 50, 70]
query_name = ‘beta’

The query_name is ‘beta’. beta’s average score is (30 + 50 + 70)/3 = 50.0.

Input Format

The first line contains the integer n, the number of students’s records. The next n lines contain the names and marks obtained by a student, each value separated by a space. The final line contains query_name , the name of a student to query.

Constraints

• 2 ≤ n ≤ 10
• 0 ≤ marks[i] ≤ 100
• length of the marks array = 3

Output Format

Print one line: The average of the marks obtained by the particular student correct to 2 decimal places.

Sample Input 0

3
Krishna 67 68 69
Arjun 70 98 63
Malika 52 56 60
Malika

Sample Output 0

56.00

Explanation 0

Marks of Malika are {52, 56, 60} whose average is (52 +56 +60)/3 ⇒  56

Sample Input 1

2
Harsh 25 26.5 28
Anurag 26 28 30
Harsh

Sample Output 1

26.50

Solution – Finding The Percentage in Python – Hacker Rank Solution

if __name__ == '__main__':
    n = int(input())
    student_marks = {}
    for _ in range(n):
        name, *line = input().split()
        scores = list(map(float, line))
        student_marks[name] = scores
    query_name = input()
output = list(student_marks[query_name])    
per = sum(output)/len(output);
print("%.2f" % per);    

Disclaimer: The above Problem (Finding The Percentage) is generated by Hacker Rank but the Solution is provided by CodingBroz. This tutorial is only for Educational and Learning Purposes.