max-consecutive-ones-iii.ts

function longestOnes(nums: number[], k: number): number {
  let start = 0,
    end = 0,
    zeros = 0;

  while (end < nums.length) {
    if (nums[end] === 0) zeros++;
    end++;
    if (zeros > k) {
      if (nums[start] === 0) {
        zeros--;
      }
      start++;
    }
  }
  return end - start;
}

const nums = [0, 0, 0, 1];
console.log(longestOnes(nums, 4));