Finding index of array of 2nd occurring element

by

I’m not writing the code for you but here’s the gist: Create a variable that tells whether or not you’ve seen your number before. Go through your array and the first time you see it set that variable to remember that you’ve seen it. The next time you see it check the variable you created to make sure you’ve seen it before and then you will have proven that you’ve seen it twice. At that moment copy the index.

More Related Contents:

  1. Removing an element from an Array (Java) [duplicate]
  2. Converting array string to arraylist without nesting it in Java
  3. Creating a program to file criminal cases and then view them, with new case being allowed to add
  4. Sorted array in Java: how can I implement? [closed]
  5. What causes a java.lang.ArrayIndexOutOfBoundsException and how do I prevent it?
  6. Converting ‘ArrayList to ‘String[]’ in Java
  7. How to create a generic array in Java?
  8. How to efficiently remove duplicates from an array without using Set
  9. Delete item from array and shrink array [duplicate]
  10. How to flatten 2D array to 1D array?
  11. Distinction between the capacity of an array list and the size of an array
  12. Converting Array of Primitives to Array of Containers in Java
  13. How can I dynamically add items to a Java array?
  14. How to find the index of an element in an int array?
  15. How do I initialize a byte array in Java?
  16. Splitting String and put it on int array
  17. Empty an array in Java / processing
  18. How to get unique items from an array?
  19. Is it possible to dynamically build a multi-dimensional array in Java?
  20. Java – Rotating array
  21. Getting all names in an enum as a String[]
  22. Java OutOfMemoryError in reading a large text file
  23. Why does printing a Java array show a memory location [duplicate]
  24. Converting an ArrayList into a 2D Array
  25. Interview question – Search in sorted array X for index i such that X[i] = i
  26. Convert byte[] to Base64 string for data URI
  27. Java Iterate Bits in Byte Array
  28. How to convert JSONArray to List with Gson?
  29. In Java, when is the {a,b,c,…} array shorthand inappropriate, and why?
  30. How to add an element to Array and shift indexes?

Leave a Comment