Write a substring method that accepts a string str and an integer idx and returns the substring contained between 0 and idx-1 inclusive. do not use any of the existing substring methods in the string, stringbuilder, or stringbuffer apis.

I’m not sure but i need to know too

It says answer in the corner just click on that

Metaprogramming  is a programming technique in which computer programs have the ability to treat programs as their data. it means that a program can be designed to read, generate, analyse or transform other programs, and even modify itself while running. ps: you don't have any options there.

Hello there,this is one thing nanett can do: she could make a new powerpoint presentation and delete unused slides or skip through unnecessary slides.hope this ! ~hottwizzlers