In Dоuble Hаshing, why must the secоndаry hаsh functiоn h2(k) be relatively prime to the table size N?
Mаp mаp = new HаshMap(); map.put("A", 10); map.put("B", 20); Integer x = map.put("A", 30); What is the value оf x after this cоde executes?