Handon - Python - slicing-- HackerRank Questions and answers Course ID:55193

 Python - Slicing

Pramodh is a friend of Azar, Who joined newly to 'xyz' computer coaching center. He wants to learn a concept called slicing in python. Let's help him to understand the concept called 'slicing'.

Function 'sliceit' takes a parameter called 'mylist' as a list. 'mylist' contains a list of elements. Slice the elements from the list based on the condition given below:

• Print the second and third element from the 'mylist'.
• Print the list of odd indexed elements of list 'mylist'. Since indexing starts at zero, odd indices would be 1,3 and so on.
• Print the last three elements from the 'mylist' in a reverse manner.

Constraints:

• 'mylist' should not contain more than 1000 elements

Input Format for Custom Testing:

Input from stdin will be processed as follows and passed to the function.

The first line contains an integer n, the size of the mylist.

Each of the next n lines contains an mylist[i] where 0<=i<n

Sample Case 0

Sample Input:

STDIN      Function Parameters 
-----      -------------------                         
8       →  mylist[] Size n = 8
3       →  mylist[] = [ 3, 4, 3, 2, 6, 1, 2, 6 ]
4
3
2
6
1
2
6

Sample Output

['4','3']

['4','2','1','6']

['6','2','1']

Answer:

#!/bin/python3

import math

import os

import random

import re

import sys

#

# Complete the 'sliceit' function below.

#

# The function accepts List mylist 

# as parameter.

#

def sliceit(mylist):

    # Write your code here

    print(mylist[1:3])

    print(mylist[1::2])

    print(mylist[-1:-4:-1])

if __name__ == '__main__':

    mylist_count = int(input().strip())

    mylist = []

    for _ in range(mylist_count):

        mylist_item = input()

        mylist.append(mylist_item)

    sliceit(mylist)

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