Requires String methods: skip if you do not know about substring yet

Given an array of three Strings and an int n, return a String made up of the character of each of the Strings with index n, in the same order as the array. Precondition: each String in the input array will have length() >= 1.

HINT

You could use a loop, or not. Your choice, since you know the number of array elements beforehand. Suggestion: use substring(n, n+1) to get a character out of each String.

STRINGS VS ARRAYS

Remember that Strings have length as a method, meaning arr[0].length() instead of arr[0].length. This gets confusing, and people often get it wrong the other way like arr.length() instead of arr.length - just come back up and look at this if you get confused.