algs4partI-004: queues WIP

Compilation:  PASSED
Style:        PASSED
Findbugs:     No potential bugs found.
API:          PASSED

Correctness:  25/32 tests passed
Memory:       47/47 tests passed
Timing:       24/24 tests passed

Raw score: 85.78% [Correctness: 65%, Memory: 10%, Timing: 25%, Style: 0%]