Any good web. sites to talk to people? or anyone got Pad. let?

What is stored in str after the following code executes? string str = "computer science"; int i = 0; while (i < 8) { if (str.indexof("m") < i) { str = str.substring(0, 2) + str; } i += 2; } computer science cocomputer science cococomputer science cocococomputer science computer scienceco

Write a method replacekey in the minheap class with the following signature: public void replacekey(integer oldkey, integer newkey) the method will replace the first occurrence of oldkey with the newkey, and restore the min-heap property after the change. if the oldkey does not exist in the heap, the method prints an appropriate message and returns without changing the heap. example: suppose our binary heap object (bh) has the following keys: *** 4 6 7 32 19 64 26 99 42 54 28 then the method call: bh.replacekey (oldkey integer(54), newkey integer(2))

Explain briefly why you cannot expect to find a previous version of every file with which you work.