Remove Duplicates from Sorted Array

My Solution

JavaScript

/**
 * @param {number[]} nums
 * @return {number}
 */

const removeDuplicates = (nums) => {
  let i = 0;
  while (i < nums.length) {
    if (nums.indexOf(nums[i]) !== i) {
      nums.splice(i, 1);
    } else {
      i += 1;
    }
  }
  return nums.length;
};