Complete the getSmallestAndLargest function in the editor below. // 'smallest' must be the lexicographically smallest substring of length 'k' // 'largest' must be the lexicographically largest ...

For example, ball < cat, dog < dorm, Happy < happy, Zoo < ball. A substring of a string is a contiguous block of characters in the string. For example, the substrings of abc are a, b, c, ab, bc, and ...