A crap codebase isn't scary; what's scary is no unit tests

Handwritten bubble reverse sort

Two features combined into one function, at the beginning use an if-else to determine which feature to use

if{
    if{
        if{
            if{
            }
        }
    }
}

Why can't I just do if !condition to exit early???????

Line 140 has four nested ifs

Every time I add a feature I don't know if the pile of crap will explode