Lists HackerRank Solution In Python

Problem

Consider a list (list = []). You can perform the following commands:

1. insert i e: Insert integer e at position i.
2. print: Print the list.
3. remove e: Delete the first occurrence of integer e.
4. append e: Insert integer e at the end of the list.
5. sort: Sort the list.
6. pop: Pop the last element from the list.
7. reverse: Reverse the list.

Initialize your list and read in the value of n followed by n lines of commands where each command will be of the 7 types listed above.

Iterate through each command in order and perform the corresponding operation on your list.

Example

N = 4

append 1

append 2

insert 3 1

print

• append 1: Append 1 to the list, arr = [1].
• append 2: Append 2 to the list, arr = [1, 2].
• insert 3 1: insert 3 at index 1, arr = [1, 3, 2].
• print: Print the array.

Output:

[1, 3, 2]

Input Format

The first line contains an integer, n, denoting the number of commands.

Each line i of the n subsequent lines contains one of the commands described above.

Constraints

• The elements added to the list must be integers.

Output Format

For each command of type print, print the list on a new line.

Sample Input 0

12insert 0 5insert 1 10insert 0 6printremove 6append 9append 1sortprintpopreverseprint

Sample Output

[6, 5, 10][1, 5, 9, 10][9, 5, 1]

Solution to HackerRank Lists In Python

if __name__ == '__main__':    N = int(input())    lst = []    for _ in range(N):        func, *params = input().split()        param = list(map(int, params))        if func == 'print':            print(lst)        else:            eval("lst."+func+"("+','.join(str(i) for i in param) + ")")