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gosuodin

kiemtradoixung

Jun 20th, 2016
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  1. #include<iostream>
  2. using namespace std;
  3. int dem(int n) {
  4. if (n < 10) {
  5. return 1;
  6. }
  7. else {
  8. return 1 + dem(n / 10);
  9. }
  10. }
  11. int nghichdao(int n) {
  12. if (n < 10) {
  13. return n;
  14. }
  15. else {
  16. return (n % 10)*(pow(10, dem(n) - 1)) + nghichdao(n / 10);
  17. }
  18. }
  19. bool kiemtra(int n) {
  20. if (n == nghichdao(n)) {
  21. return 1;
  22. }
  23. else {
  24. return 0;
  25. }
  26. }
  27. void main() {
  28. int n;
  29. cout << kiemtra(123321);
  30. system("pause");
  31. }
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