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Tag: quicksort

Index 16 out of bounds for length 16

I am trying to sort an array of x elements using quickSort but I am getting an error “Index 16 out of bounds for length 16” please help. Answer For an array of 16 elements the indexes are 0 to 15. Thus index 16 is not part of the array and you get the OutOfBoundsException.

Java Quick Sort Performance

I was doing sorting array problems and found one of the quick sorting solution extremely fast, and the only difference is the two lines of code in function 1Partition. Wondering why the following two lines of code in 1Partition can greatly improve the performance: Here’s the full source code: } Answer I guess you are doing the question on a

QuickSort descending order

I am trying to implement QuickSort in a descending order. I have tried to trace through my code to see why it is only partially-sorted. My input was an int array of: {3,4,6,1,9,7}. After sorting, I got {9,4,7,6,3,1}, where 4 is not in the correct place. Answer Your code should look something like this:

Quick Sort Sorts Descending Not Ascending

I just implemented QuickSort algorithm from book and got weird output. It works but it sorts in descending order instead of ascending. For example: [1, 5, 2, 10, 6, 9, 8, 3, 7, 4] is sorted [10, 9, 8, 7, 6, 5, 4, 3, 2, 1] cant seem to find source in my code: INITIAL CALL: how do i calculate