Quicksort
// Example algorithm from Doug Crockford's 'JavaScript: The Good Parts'
// 1. Divide the array into two groups, low and high.
// 2. Call quickSort on each group containing more than one element.INFO
// Example algorithm from Doug Crockford's 'JavaScript: The Good Parts'
// 1. Divide the array into two groups, low and high.
// 2. Call quickSort on each group containing more than one element.