js-dsa-utils/src/search.js

Basic DSA utilities (sorting, searching, stack, queue,linked list etc.)

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

module.exports = { binarySearch };