Given an array nums, write a function to move all 0’s to the end of it while maintaining the relative order of the non-zero elements.

For example, given nums = [0, 1, 0, 3, 12], after calling your function,
nums should be [1, 3, 12, 0, 0].

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function moveZeroes(nums) {
        for(var i=0;i<nums.length;i++){
            var index =nums.indexOf(0);
            if(nums[index]==0){
                nums.push(0);
                nums.splice(index,1);
            }
         }
    }