I wrote two functions that put the list upside down and turned them around to test them in the main function. It seems that certain numbers are constantly added to the arr list in functions created using the list. So I think if you test the second function with the same input, it will be printed differently. I wonder if there is any other way to slice the list other than the list, and I don't know why it is added...Help me!!
The reason why the output value is strange is that the original list
arrr has been modified. It looks like something is attached when you reuse the transformed object.
arrr original and try to fix it by creating and dealing with replications.
For studying, it is close to Cheat, but there is a
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