Question

return the first and last characters of a character array, concatenated together. if there is only one character in the character array, the function should give that character back twice since it is both the first and last character of the character array.

Answer 1

To concatenate the first and last characters of a character array, check the length of the array and return the appropriate value.

Step-by-step explanation:

The task is to concatenate the first and last characters of a character array together. If the character array contains only one character, the function should return that character repeated twice. For example, if the character array is ['A', 'B', 'C'], the function should return 'AC'.

To implement this, you can use the index positions of the array elements. The first character is at index 0, and the last character is at the index 'length - 1'. If the length of the array is 1, return the character repeated twice using string concatenation or the '+' operator. If the length of the array is greater than 1, concatenate the first and last characters together using the '+' operator.