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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. 	public static void main (String[] args) throws java.lang.Exception
  11. 	{
  12. 		Scanner scanner = new Scanner(System.in);
  13.  
  14.         int n = scanner.nextInt();
  15.         int[] arr = new int[n];
  16.  
  17.         for (int i = 0; i < n; i++) {
  18.             arr[i] = scanner.nextInt();
  19.         }
  20.  
  21.         int p = scanner.nextInt();
  22.         int[] positions = new int[p];
  23.  
  24.         for (int i = 0; i < p; i++) {
  25.             positions[i] = scanner.nextInt();
  26.         }
  27.  
  28.         int[] result = deleteElements(arr, positions);
  29.         System.out.println("Resulting Array: " + Arrays.toString(result));
  30.  
  31.         scanner.close();
  32.     }
  33.  
  34.     public static int[] deleteElements(int[] arr, int[] positions) {
  35.         Set<Integer> deleteSet = new HashSet<>();
  36.         for (int pos : positions) {
  37.             int index = pos - 1;  
  38.             if (index >= 0 && index < arr.length) {
  39.                 deleteSet.add(index);
  40.             }
  41.         }
  42.  
  43.         List<Integer> resultList = new ArrayList<>();
  44.         for (int i = 0; i < arr.length; i++) {
  45.             if (!deleteSet.contains(i)) {
  46.                 resultList.add(arr[i]);
  47.             }
  48.         }
  49.  
  50.         int[] result = new int[resultList.size()];
  51.         for (int i = 0; i < result.length; i++) {
  52.             result[i] = resultList.get(i);
  53.         }
  54.  
  55.         return result;
  56. 	}
  57. }
Success #stdin #stdout 0.21s 60932KB
comments (?)
stdin
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5
0 1 2 3 4
2
2 4
stdout
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Resulting Array: [0, 2, 4]
https://ideone.com/ZPyF7K
language:
Java (HotSpot 12)
created:
1 day ago
visibility:
public

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