Tell me about yourself and technical questions

imlement a collection that answers these requirements: a. supports the following API: get, set, setAll. b. comlexity O(1) example: set(index,value) setAll(value) get(index) set(1,10); set(2,20) get(1);get(2); ==> 10,20 set(1,10); set(2,20);setAll(30); get(1);get(2); ==> 30,30 set(1,10); set(2,20);setAll(30);set(2,40) get(1);get(2); ==> 30,40