Most efficient way to increment
2018-04-29 本文已影响0人
抽刀断水2
Map.merge(key, 1, Integer::sum)
https://stackoverflow.com/questions/81346/most-efficient-way-to-increment-a-map-value-in-java
Map.merge(key, 1, Integer::sum)
https://stackoverflow.com/questions/81346/most-efficient-way-to-increment-a-map-value-in-java