Plus One

ID: 66; Easy

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Solution 1

func plusOne(digits []int) []int {
    for i := len(digits)-1; i >= 0; i-- {
        digits[i]++
        if digits[i] != 10 {
            return digits
        }
        digits[i] = 0
    }
    digits[0] = 1
    digits = append(digits, 0)
    return digits
}