function bubblesortOnce(a) { return [...a].map((e, i, arr) => e > arr[i+1] ? (arr[i] = arr[i+1], arr[i+1] = e, arr[i]) : e) }
function bubblesortOnce(a) { return [...a].map((e, i, arr) => e > arr[i+1] ? (arr[i] = arr[i+1], arr[i+1] = e, arr[i]) : e) }