PYTHON BASIC PROBLEMS SOLUTIONS(HACKERRANK) Day-14 LEARN CODING EASILY. HOW TO BE GOOD PROGRAMMER?
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PROBLEM LINK:https://www.hackerrank.com/challenges...
PROBLEM:
The provided code stub will 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' 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:
1. n value is 2 to 10
2.length of marks arrays=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 for Malika are {52,56,60} whose average is {(52+56+60)/3}=56
SAMPLE INPUT 0:
2
Harsh 25 26.5 28
Anurag 26 28 30
Harsh
SAMPLE OUTPUT 1:
26.50
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()
for i in student_marks:
if i == query_name:
add=sum(student_marks[query_name])
output=add/3
output2=format(output,'.2f')
print(output2)
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