Create ServiceLane.java

Solution for the Service Lane problem on Hackerrank.com.

Submission results :

# 0 0.2s : Success

# 1 0.19s : Success

# 2 0.22s : Success

# 3 0.42s : Success

# 4 0.47s : Success

# 5 0.6s : Success

# 6 0.55s : Success

# 7 0.4s : Success

# 8 0.75s : Success

# 9 0.76s : Success

# 10 0.76s : Success

# 11 0.78s : Success