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Find an element in a stack data structure swift 4


By : user2174629
Date : October 17 2020, 08:10 PM
it fixes the issue If you define your Stack class to require that its elements conform to Equatable:
code :
public struct Stack<T> where T: Equatable {
public func hasElement(_ element: T) -> Bool {
    return array.contains(element)
}
public extension Stack where T: Equatable {
    public func hasElement(_ element: T) -> Bool {
        return array.contains(element)
    }
}


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Find k-th smallest element data structure


By : heligu14
Date : March 29 2020, 07:55 AM
this will help I have a problem here that requires to design a data structure that takes O(lg n) worst case for the following three operations: , Two solutions come in mind:

Which is better in finding minimum element Stack or Heap Data structure


By : Maaian
Date : March 29 2020, 07:55 AM
will help you You basically can use a solution based on two stacks to find the minimum value, but it's not effective (because it consumes 2*N memory while a heap consumes N memory) and stacks are supposed to be used for other purposes.

How does .next work when storing a new element on the stack data structure? [Java]


By : codemouse
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , Just think about this, if you have two initial raw data 1 and 2. And, on the other hand, I tell you to map all the natural numbers as Items and then put them into a stack.
Considering, you might just come up with let us say, two Item objects currently unrelated as -
code :
Item item1 = new Item(1);
Item item2 = new Item(2);
item2.setNext(item1); // using setter for 'next'

Swift 2.2 Iterable Stack Data Structure


By : MSeaburn
Date : March 29 2020, 07:55 AM
I wish this helpful for you Swift keeps changing so quickly. If you write Swift 2 code today, it's gonna be obsolete in a few months when Swift 3 comes out. Anyhow, here's how you can do it in Swift 2.

Fast data structure or algorithm to find mean of each pixel in a stack of images


By : EsprimoP
Date : March 29 2020, 07:55 AM
it helps some times The problem with the nested loop in the question is that it's not very cache friendly. You go skipping through memory with a long stride, effectively rendering your data cache useless. You're going to spend a lot of time just accessing the memory.
If you can spare the memory, you can create an extra image-sized buffer to accumulate totals for each pixel as you walk through all the pixels in all the images in memory order. Then you do a single pass through the buffer for the division.
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