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Feb 2nd, 2020
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  1. function ladybugs(arr) {
  2. let sizeOfField = arr[0];
  3. let initialIndexes = arr[1];
  4. initialIndexes = initialIndexes.split(" ");
  5. let commands = arr.slice(2);
  6. let field = [];
  7.  
  8. for (let i = 0; i < sizeOfField; i++) {
  9. field.push(0);
  10. }
  11.  
  12. for (let i = 0; i < initialIndexes.length; i++) {
  13. let position = Number(initialIndexes[i]);
  14. if (position > field.length - 1) {
  15. continue;
  16. }
  17. field[position] = 1;
  18. }
  19.  
  20.  
  21. for (let i = 0; i < commands.length; i++) {
  22. let currentCommand = commands[i];
  23. currentCommand = currentCommand.split(" ");
  24.  
  25. let position = Number(currentCommand[0]);
  26. let direction = currentCommand[1];
  27. let flyCount = Number(currentCommand[2]);
  28.  
  29. if (field[position] === 0
  30. || position < 0
  31. || position > field.length - 1) {
  32. continue;
  33. }
  34.  
  35. field[position] = 0;
  36.  
  37. if (flyCount < 0) {
  38. direction = direction === "right" ? "left" : "right";
  39. flyCount = Math.abs(flyCount);
  40. }
  41.  
  42. let nextPosition = 0;
  43.  
  44. if (direction === "right") {
  45. nextPosition = position + flyCount;
  46. } else if (direction === "left") {
  47. nextPosition = position - flyCount;
  48. }
  49.  
  50. while (field[nextPosition] === 1) {
  51. nextPosition += flyCount;
  52. }
  53.  
  54. if (nextPosition > field.length - 1 || nextPosition < 0) {
  55. continue;
  56. }
  57.  
  58. field[nextPosition] = 1;
  59. }
  60.  
  61. console.log(field.join(" "));
  62. }
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