Question

Codio challenge

We will pass you 2 inputs

an list of numbers

a number, N, to look for

Your job is to loop through the list and find the number specified in the second input. Output the list element index where you find the number.

If N is not found in the list, output -1.

Tip: Remember the break statement? It exits the loop. You can (but don’t have to) use this.

# Get our input from the command line
import sys
N= int(sys.argv[2])

# Convert the list of strings into integers
numbers= []
for i in sys.argv[1].split(","):
if(i.isdigit()):
numbers.append(int(i))
# numbers now contains the list of integers

# Write your code below

Answer 1

Python Program:

"""
   loop through the list and find the number specified in the second input.
   Output the list element index where you find the number
"""

# Get our input from the command line
import sys
N= int(sys.argv[2])

# Convert the list of strings into integers
numbers= []
for i in sys.argv[1].split(","):
   if(i.isdigit()):
       numbers.append(int(i))
# numbers now contains the list of integers
           
# Set index to -1
index = -1

# Variable to iterate over list
i = 0

# Iterating over loop
while index == -1 and i < len(numbers):
  
   #Checking for N
   if numbers[i] == N:
       # Updating index
       index = i
  
   # Incrementing i
   i = i + 1
  
  
# Checking i value
if index == -1:
   # Printing error message
   print("\n Element not found... \n")
else:
   print("\n Element found at %d... \n"%(index))

_____________________________________________________________________________________________

Code Screenshot:

臼findPosition.py E 11 numbers=[] 12 貝for İ in sys.argv [1].split(","): 13 14 15 # numbers now contains the list of integers 16 17 #Set Index to-1 18 index=-1 19 20 # variable to iterate over list 21 i=0 if(i.isdigit)): numbers.append (int (i)) 23 # Iterating over loop 24 曰while index ==-1 and 1 < len (numbers): 25 26 27 2 8 29 30 31 32 #checking for N if numbers [i] N: # Updating index indexi # Incrementing i=i+1 3 4 35 # checking ¡value 36曰if Index ==-1: 37 38 39 40 # Printing error message print("n Element not found n") else: print ("\n Element f und at %d \n"% (index)) Python file

_____________________________________________________________________________________________

Sample Run:

C:Windows lsystem321cmd.exe C:\Users SaiBabu AppData Local\Programs Python\Python35>python d:Python findPosition. py 23,6,18,4,105,14 6 Element found at 1... C: \Users SaiBabu AppData\Local\Programs\Python\Python35> python d:\Python findPosition. py 23,6,18,4,105,14 23 Element found at 0.. . C:\Users SaiBabu AppData\Local\Programs\Python\Python35> python d:\Python findPosition. py 23,6,18,4,105,14 18 Element found at 2... C:\Users SaiBabu AppData\Local\Programs Python\ Python35>python d:\Python findPosition.py 23,6,18,4,105,14 14 Element found at 5. .. C:\UsersSaiBabu AppData\Local\Programs \Python\Python35 python d:\Python findPosition. py 23,6,18,4,105,14 95 Element not found. C:\Users SaiBabu\AppData Local\Programs Python Python35>