I had the same code as the solution except that in the Swap function I used the same int array name "nums" and it had weird behavior where the last entry is incorrect. When I changed it to a different name, like "arr" in the solution, it worked fine. I'm not sure if there is some hidden global variable names "nums" that is causing this weird behavior?

I thought I was going crazy because I couldn't find any difference in the logic of the code.