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Apr 26th, 2018
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  1. package main
  2. //import "github.com/kr/pretty"
  3.  
  4. func plusOne(digits []int) []int {
  5. n := len(digits) - 1
  6. digits[n]++
  7. for n > 0 && digits[n] >= 10 {
  8. digits[n], digits[n - 1], n = 0, digits[n - 1] + 1, n - 1
  9. }
  10. if n == 0 && digits[0] >= 10 {
  11. digits[0] = 0
  12. digits = append([]int{1}, digits...)
  13. }
  14. return digits
  15. }
  16.  
  17. func main() {
  18. plusOne([]int{0})
  19. }
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