Question

Write a small function for iterating over an array of size 4. Check if the value
present at index 3 is a number then function should return true otherwise
false

Answer 1

Flas) fh krishan eijdhdbcxghzisis

Answer 2

Language used: Python Programming.

In python, lists acts as heterogeneous arrays. So, let us use lists and check whether the element at index 3 is a number or not.

Program:

#Function that checks if the element at index 3 is a number or not.

#Remember that indexing starts with 0. So, index 3 will be the last element position in array of size 4. So, index 3 equals index -1.

def checkIndex(arr):

   #checking if element at index 3 is a number or not. If yes, return true

   if arr[3].isnumeric():

        return 'true'

  #If the above condition fails, return false.

   return 'false'

#initializing array

arr=[]

#appending 4 elements into array

for i in range(4):

   arr.append(input())

#calling the function and printing the returned value

print(checkIndex(arr))

Input:

preethi

govind

ravi

99

Output:

true

Input:

1

arjun

4.32

abhimanyu

Output:

false

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