HackerRank Day 7: Arrays | Python

In this series, I will walk you through Hacker Rank’s 30 days of code challenge day by day.

In Day 7, we will learn about Lists and Arrays.

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View my solution for Day 7 at

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[arjuns]

Alternate Solution:
Convert array in reverse order, store it in tuple and iterate over it.
arr2=tuple(arr[::-1])


for i in arr2:
print(i, end =" ")

[Uchiha_Mako]

This was my approach

if __name__ == '__main__':
    n = int(input())

    arr = list(map(int,  input().rstrip().split()))
arr.reverse()

for i in arr:
    print(i,  end=" ")

[vasiliystepanov]

Simpler Alternate Solution:
We get reversed tuple and unzip elements by '*' in the list. It takes a total 2 strings:
result = arr[::-1]
    print(*result)

[abhijithcv]

Please let me know about my approach.
while n>0:
print(arr[n-1], end=" ")
n=n-1

[rockinriobrazil]

You actually have to define the 'n' variable. Otherwise, you will get an error "n is not defined".So you do have to worry about this variable.

[terellcase]

why not just use ?
arr.reverse()
print(*arr)

[avinashranga]

Alternate solution

# Use slicing method inbuilt function to reverse the Array
if __name__ == '__main__':
n = int(input())
arr = list(map(int, input().rstrip().split()))

# String Slicing
revArr = arr[::-1]

# Convert and add Array to String.
revArrStr = ' '.join(str(i) for i in revArr)
print(revArrStr)


#Using Built in reverse function
if __name__ == '__main__':
n = int(input())
arr = list(map(int, input().rstrip().split()))
arr.reverse()
for i in range(0, len(arr)):
print(arr[i], "", end="")

[oluchinwade]

new_num= [str(i) for i in reversed(arr)]
result = ' '. join(new_num)
print(result)

[librev]

Failed:
Traceback (most recent call last):
File "solution.py", line 18, in <module>

TypeError: 'builtin_function_or_method' object is not subscriptable

Code:
#!/bin/python3

import math
import os
import random
import re
import sys



if __name__ == '__main__':
n = int(input())

arr = list(map(int, input().rstrip().split()))

reversed_array = []
for i in range(n):


for i in range(len(reversed_array)):
output_string += str[reversed_array[i]] + ' '

print(output_string)

[SanjanaKumari-kxwh]

n=int(input())
for i in range(n):
arr=list(map(int, input().rstrip().split()))
are.reverse()
for i in range(0, len(arr)):
print(arr[i], "", end="")
#its so easy code sir