max-consecutive-ones.js

/**
 * Max Consecutive Ones
 *
 * Given a binary array, find the maximum number of consecutive 1s in this array.
 *
 * Example 1:
 * Input: [1,1,0,1,1,1]
 * Output: 3
 * Explanation: The first two digits or the last three digits are consecutive 1s.
 *     The maximum number of consecutive 1s is 3.
 * Note:
 *
 * The input array will only contain 0 and 1.
 * The length of input array is a positive integer and will not exceed 10,000
 */

/**
 * @param {number[]} nums
 * @return {number}
 */
const findMaxConsecutiveOnes = nums => {
  let maxLocal = 0;
  let max = 0;

  for (let num of nums) {
    max = Math.max(max, (maxLocal = num === 0 ? 0 : maxLocal + 1));
  }

  return max;
};

export { findMaxConsecutiveOnes };