Alphabet_Rangoli.py

# You are given an integer, . Your task is to print an alphabet rangoli of size . (Rangoli is a form of Indian folk art based on creation of patterns.)

# Different sizes of alphabet rangoli are shown below:

# #size 3

# ----c----
# --c-b-c--
# c-b-a-b-c
# --c-b-c--
# ----c----

# #size 5

# --------e--------
# ------e-d-e------
# ----e-d-c-d-e----
# --e-d-c-b-c-d-e--
# e-d-c-b-a-b-c-d-e
# --e-d-c-b-c-d-e--
# ----e-d-c-d-e----
# ------e-d-e------
# --------e--------

# #size 10

# ------------------j------------------
# ----------------j-i-j----------------
# --------------j-i-h-i-j--------------
# ------------j-i-h-g-h-i-j------------
# ----------j-i-h-g-f-g-h-i-j----------
# --------j-i-h-g-f-e-f-g-h-i-j--------
# ------j-i-h-g-f-e-d-e-f-g-h-i-j------
# ----j-i-h-g-f-e-d-c-d-e-f-g-h-i-j----
# --j-i-h-g-f-e-d-c-b-c-d-e-f-g-h-i-j--
# j-i-h-g-f-e-d-c-b-a-b-c-d-e-f-g-h-i-j
# --j-i-h-g-f-e-d-c-b-c-d-e-f-g-h-i-j--
# ----j-i-h-g-f-e-d-c-d-e-f-g-h-i-j----
# ------j-i-h-g-f-e-d-e-f-g-h-i-j------
# --------j-i-h-g-f-e-f-g-h-i-j--------
# ----------j-i-h-g-f-g-h-i-j----------
# ------------j-i-h-g-h-i-j------------
# --------------j-i-h-i-j--------------
# ----------------j-i-j----------------
# ------------------j------------------
# The center of the rangoli has the first alphabet letter a, and the boundary has the  alphabet letter (in alphabetical order).

# Function Description

# Complete the rangoli function in the editor below.

# rangoli has the following parameters:

# int size: the size of the rangoli
# Returns

# string: a single string made up of each of the lines of the rangoli separated by a newline character (\n)
# Input Format

# Only one line of input containing , the size of the rangoli.

# Constraints


# Sample Input

# 5
# Sample Output

# --------e--------
# ------e-d-e------
# ----e-d-c-d-e----
# --e-d-c-b-c-d-e--
# e-d-c-b-a-b-c-d-e
# --e-d-c-b-c-d-e--
# ----e-d-c-d-e----
# ------e-d-e------
# --------e--------


def print_rangoli(size):
    # your code goes here
    width  = size*4-3
    string = ''

    for i in range(1,size+1):
        for j in range(0,i):
            string += chr(96+size-j)
            if len(string) < width :
                string += '-'
        for k in range(i-1,0,-1):    
            string += chr(97+size-k)
            if len(string) < width :
                string += '-'
        print(string.center(width,'-'))
        string = ''

    for i in range(size-1,0,-1):
        string = ''
        for j in range(0,i):
            string += chr(96+size-j)
            if len(string) < width :
                string += '-'
        for k in range(i-1,0,-1):
            string += chr(97+size-k)
            if len(string) < width :
                string += '-'
        print(string.center(width,'-'))

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