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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 – Nested Lists in Python – Hacker Rank Solution
Nested Lists in Python – Hacker Rank Solution
Given the names and grades for each student in a class of students, store them in a nested list and print the name(s) of any student(s) having the second lowest grade.
Note: If there are multiple students with the second lowest grade, order their names alphabetically and print each name on a new line.
Example
The ordered list of scores is , so the second lowest score is . There are two students with that score: . Ordered alphabetically, the names are printed as:
alpha beta
Input Format
The first line contains an integer, , the number of students.
The subsequent lines describe each student over lines.
– The first line contains a student’s name.
– The second line contains their grade.
Constraints
- There will always be one or more students having the second lowest grade.
Output Format
Print the name(s) of any student(s) having the second lowest grade in. If there are multiple students, order their names alphabetically and print each one on a new line.
Sample Input 0
5 Harry 37.21 Berry 37.21 Tina 37.2 Akriti 41 Harsh 39
Sample Output 0
Berry Harry
Explanation 0
There are students in this class whose names and grades are assembled to build the following list:
python students = [['Harry', 37.21], ['Berry', 37.21], ['Tina', 37.2], ['Akriti', 41], ['Harsh', 39]]
The lowest grade of belongs to Tina. The second lowest grade of belongs to both Harry and Berry, so we order their names alphabetically and print each name on a new line.
Nested Lists in Python – Hacker Rank Solution
if __name__ == '__main__':
students = []
for _ in range(int(input())):
name = input()
score = float(input())
students.append([name,score])
x = 99999
for i in range(len(students)):
if x > float(students[i][1]):
x = float(students[i][1])
y = 999999
for i in range(len(students)):
if float(students[i][1]) > float(x) and y > float(students[i][1]):
y = float(students[i][1])
runner = []
for i in range(len(students)):
if float(students[i][1]) == float(y):
runner.append(students[i][0])
runner = sorted(runner)
for i in range(len(runner)):
print(runner[i])
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