> typing speed test

function binarySearch(arr: number[], target: number): number {↵
  let left = 0;↵
  let right = arr.length - 1;↵
  while (left <= right) {↵
    const mid = Math.floor((left + right) / 2);↵
    if (arr[mid] === target) return mid;↵
    if (arr[mid] < target) left = mid + 1;↵
    else right = mid - 1;↵
  }↵
  return -1;↵
}