Shuffler | android App which Shuffles your favorite songs | Android library

I wanna say that I appreciate every contribution on the following problem;
I am currently programming an array shuffler that is shuffling the elements of an array to different randomized positions without changing the instance, so there is no need for revaluating the array field with the returning created array instance (the invocation of that shuffling). I want to create an alternative to other already existing shuffle algorithms like the Fisher-Yates shuffle algorithm, as an experiment. So I tried several operations but I think I am stuck. I could create an array that stores already used indicies and create a random index that has not been used yet (during the iteration of every element within the array that I want to shuffle). But I want to make this way more cleaner. As the bitwise operations could help me, but just with 2^x hexadecimals. Here is an example on what I want to achieve and what I've already tried, but simplified:

i am a beginner learning python. I am trying to make a program that shuffles a deck of cards without the use of random.shuffle or random.choice. When I use my program, I can shuffle my list and it prints out, and then I can print out the original deck of cards. However, when i go to shuffle the deck again the error occurs.

Can anyone help?

Making a fisher-yates card shuffler in unity c#, the cards are compiled on a list with CardObjects=GameObject.FindGameObjectsWithTag("cards") and shuffled by the thing but the findgameobjects thing always "finds" duplicates of a gameobject with the tag, for example elemnt23 of the list might be a 10 of clubs but then element17 and element41 are also 10 of clubs, these duplicates fill up space on the list meaning that the list runs out of room for the other cards, meaning there are a few cards just lying around not doing anything and not on the list. Everything is working with no bugs the only problem is that it just finds the same object more then once.

code (triggered by a button if that means anything):

I am trying to create a card shuffler method and I am currently having trouble with an IndexOutOfBounds exception. I can't seem to understand why it is erroring out even after working through the code.

I'm using componentDidUpdate to send state to dispatch. At the moment I'm getting the error this.props.handleSubmit is not a function. When I log this.props I can't see the function in the log, even though I'm passing it in via mapDispatchToProps. Why might this be?

Component

I'm using map to iterate over an array in React. I want to pass four props into the same component (two player names and two player ids). These are generated from an array of player names. Each MatchCard needs two players. At present I can only pass duplicated information in. What's the best way to do this?

I'm sorry if my question is very vague as i'm very very very new to coding and asking coding questions but i hope someone understands my problem as this is very frustrating because an error message doesn't appear but i don't know what im doing wrong.

So for context, i have a array number shuffler.

I try to write my implementation of c++ iterator, but met some problems. When I try to iterate in range-based for, but get error that my iterator don't have suitable "begin" function and none was found. I wrote begin() and end() function. What's wrong?

Below archive file(shuffler.a) is created with below command: