Iterate an array from the any index then the beginning, can transverse array all element from any starting index

middleloop.swift

let a = [1,2,3,4,5,6]
let startIndex = 5
let endIndex = a.count

for i in stride(from: 0, to: endIndex, by: 1) {
    let newIndex = (i + startIndex) % endIndex
    print(newIndex)
}