addBorder.md

Add Border

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Given a rectangular matrix of characters, add a border of asterisks(*) to it.

Example

For

picture = ["abc",
           "ded"]

the output should be

solution(picture) = ["*****",
                      "*abc*",
                      "*ded*",
                      "*****"]

Input/Output

• [execution time limit] 4 seconds (py3)

• [input] array.string picture

  A non-empty array of non-empty equal-length strings.

  Guaranteed constraints:
  1 ≤ picture.length ≤ 100,
  1 ≤ picture[i].length ≤ 100.

• [output] array.string

  The same matrix of characters, framed with a border of asterisks of width 1.

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Solution

def solution(picture):
    x = len(picture[0])
    y = len(picture)
    
    x_add = ''
    for i in range(x):
        x_add += '*'
    
    picture = [x_add] + picture + [x_add]
    
    
    for i in range(len(picture)):
        picture[i] = '*' + picture[i] + '*'
    
    return picture

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See on app.codesignal.com