double_char¶

Requirements:

string building and filtering

Get any string from the user, output a string where for every char in the original, there are two chars.

This exercise was taken from codingbat.com and has been adapted for the Python language. There are many great programming exercises there, but the majority are created for Java.

Test 1¶

Input:

'The'

Output:

'TThhee'

Test 2¶

Input:

'AAbb'

Output:

'AAAAbbbb'

Test 3¶

Input:

'Hi-There'

Output:

'HHii--TThheerree'

Test 4¶

Input:

'Word!'

Output:

'WWoorrdd!!'

Test 5¶

Input:

'!!'

Output:

'!!!!'

Test 6¶

Input:

''

Output:

''

Test 7¶

Input:

'a'

Output:

'aa'

Test 8¶

Input:

'.'

Output:

'..'

Test 9¶

Input:

'aa'

Output:

'aaaa'