Method applyOperations

ApplyOperationsToAnArray.java:2–20

(int[] nums)

class Solution {
    public int[] applyOperations(int[] nums) {
        int nz=0;
        int n = nums.length;
        for(int i=0;i<n;i++){
            if(i < n-1 && nums[i]!=0  && nums[i]==nums[i+1]){
                nums[i]*=2;
                nums[i+1]=0;
            }
            if(nums[i]!=0){
                if(i!=nz){
                    int temp = nums[i];
                    nums[i] = nums[nz];
                    nums[nz] = temp;
                }
                nz++;
            }
        }
        return nums;   
    }
}