remove-duplicates-from-sorted-array.js

// Given a sorted array, remove the duplicates in place such that each element appear only once and return the new length.
//
//
// Do not allocate extra space for another array, you must do this in place with constant memory.
//
//
//
// For example,
// Given input array nums = [1,1,2],
//
//
// Your function should return length = 2, with the first two elements of nums being 1 and 2 respectively. It doesn't matter what you leave beyond the new length.


/**
 * @param {number[]} nums
 * @return {number}
 */
var removeDuplicates = function(nums) {
    var j = 0;
    var i = 0;
    for (l = nums.length; i < l; i++) {
        if (nums[j] !== nums[i]) {
            nums[++j] = nums[i];
        }
    }
    return j+1;
};