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Feb 20th, 2020
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  1. import java.util.Arrays;
  2. import java.util.List;
  3. import java.util.Scanner;
  4. import java.util.stream.Collectors;
  5.  
  6. public class Problem4 {
  7. public static void main(String[] args) {
  8. Scanner scanner = new Scanner(System.in);
  9.  
  10. String input = scanner.nextLine(); // 1 2 3 4 5
  11. List<Integer> numbers = Arrays.stream(input.split("\\s+")).map(Integer::parseInt).collect(Collectors.toList());
  12.  
  13. String operation = scanner.nextLine(); // Add 5
  14.  
  15. while (!operation.equals("End")){
  16. String[] arrayOperation = operation.split("\\s+"); // remove 3
  17.  
  18. if (arrayOperation.length == 2){
  19. if (arrayOperation[0].equals("Add")){
  20. numbers.add(numbers.size(), Integer.parseInt(arrayOperation[1])); // 1 2 3 5 5
  21. }else if (arrayOperation[0].equals("Remove")){
  22. if (Integer.parseInt(arrayOperation[1]) >= numbers.size() || Integer.parseInt(arrayOperation[1])<0 ){
  23. System.out.println("Invalid index");
  24. }else{
  25. numbers.remove(Integer.parseInt(arrayOperation[1]));
  26. }
  27. }
  28. } else if (arrayOperation.length == 3){
  29. if (arrayOperation[0].equals("Shift")){
  30. int cycleNumber = Integer.parseInt(arrayOperation[2]);
  31. if (arrayOperation[1].equals("left")){
  32. for (int i = 0 ; i<cycleNumber ; i++){
  33. numbers.add(numbers.size() , numbers.get(0));
  34. numbers.remove(0);
  35. }
  36. }else {
  37. for (int i = 0 ; i<cycleNumber ; i++){
  38. numbers.add(0 , numbers.get(numbers.size()-1));
  39. numbers.remove(numbers.size()-1);
  40. }
  41. }
  42. }else {
  43. if (Integer.parseInt(arrayOperation[2]) >= numbers.size() || Integer.parseInt(arrayOperation[2])<0){
  44. System.out.println("Invalid index");
  45. }else {
  46. numbers.add(Integer.parseInt(arrayOperation[2]) , Integer.parseInt(arrayOperation[1]));
  47. }}
  48. }
  49. operation = scanner.nextLine();
  50. }
  51.  
  52. for (int element : numbers) {
  53. System.out.print(element + " ");
  54. }
  55.  
  56.  
  57.  
  58.  
  59.  
  60.  
  61. }
  62. }
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