Spiral problem using python

# -*- coding: utf-8 -*-

"""

Created on Thu Feb 23 21:46:51 2023

@author: Shubham Prajapati

Problem:Spiral

Input:

arr=[[1,2,3],[4,5,6],[7,8,9]]

Output:

[1, 2, 3, 6, 9, 8, 7, 4, 5]   

"""

lst=[]         #declaring empty list 

def spiral(arr,row,col): #declaring and defining a spiral function 

    for i in range(0,1):

     for j in range(0,col):

      lst.append(arr[i][j])

    lst.append(arr[1][col-1])

    for i in range(len(arr)-1,1,-1):

     for j in range(col-1,-1,-1):

      lst.append(arr[i][j])

    for i in range(row-2,0,-1):

     for j in range(0,col-1):

      lst.append(arr[i][j])

    return lst #it will reurn a list

row=int(input("Enter no of rows:")) #It will take no of rows of a matrix

col=int(input("Enter no of coloumns:")) #it will take no of columns in a matrix

arr=eval(input("Enter an elements in the array:"))

print("Spiral matrix is:",spiral(arr,row,col))  #whenever our function is return something then we have to call using print() function

@author: Shubham Prajapati

Problem:Spiral

Input:

arr=[[1,2,3],[4,5,6],[7,8,9]]

Output:

[1, 2, 3, 6, 9, 8, 7, 4, 5]  

"""

lst=[]         #declaring empty list

def spiral(arr,row,col): #declaring and defining a spiral function

    for i in range(0,1):

     for j in range(0,col):

      lst.append(arr[i][j])

    lst.append(arr[1][col-1])

    for i in range(len(arr)-1,1,-1):

     for j in range(col-1,-1,-1):

      lst.append(arr[i][j])

    for i in range(row-2,0,-1):

     for j in range(0,col-1):

      lst.append(arr[i][j])

    return lst #it will reurn a list

row=int(input("Enter no of rows:")) #It will take no of rows of a matrix

col=int(input("Enter no of coloumns:")) #it will take no of columns in a matrix

arr=eval(input("Enter an elements in the array:"))

print("Spiral matrix is:",spiral(arr,row,col))  #whenever our function is return something then we have to call using print() function