Solution.go

func applyOperations(nums []int) []int {
	n := len(nums)
	for i := 0; i < n-1; i++ {
		if nums[i] == nums[i+1] {
			nums[i] <<= 1
			nums[i+1] = 0
		}
	}
	ans := make([]int, n)
	i := 0
	for _, x := range nums {
		if x > 0 {
			ans[i] = x
			i++
		}
	}
	return ans
}