Java集合 两个Map-value值求和

Java集合 两个Map-value值求和

应用场景
两个map<k,v>中k值相同的value值求和返回map计算

代码案例

 /** * Map外层遍历 */ public Map<Integer, Map<Integer, Integer>> mapCount(Map<Integer, Map<Integer, Integer>> quoraListMapSource, Map<Integer, Map<Integer, Integer>> quoraListMapTarget) { for (Integer sourceKey : quoraListMapSource.keySet()) { if (quoraListMapTarget.containsKey(sourceKey)) { Map<Integer, Integer> integerMap = mapValueCount(quoraListMapSource.get(sourceKey), quoraListMapTarget.get(sourceKey)); quoraListMapTarget.put(sourceKey, integerMap); } } return quoraListMapTarget; } /** * MapValue统计 */ public Map<Integer, Integer> mapValueCount(Map<Integer, Integer> quoraListMapSource, Map<Integer, Integer> quoraListMapTarget) { for (Integer sourceKey : quoraListMapSource.keySet()) { if (quoraListMapTarget.containsKey(sourceKey)) { quoraListMapTarget.put(sourceKey, quoraListMapSource.get(sourceKey) + quoraListMapTarget.get(sourceKey)); } } return quoraListMapTarget; }