java - How to Split odd and even numbers and sum of both in collection using Stream -


how can split odd , numbers , sum both in collection using stream method of java-8 ??

public class splitandsumoddeven {  public static void main(string[] args) {      // read input     try (scanner scanner = new scanner(system.in)) {         // read number of inputs needs read.         int length = scanner.nextint();         // fillup list of inputs         list<integer> inputlist = new arraylist<>();         (int = 0; < length; i++) {             inputlist.add(scanner.nextint());         }         // todo:: operate on inputs , produce output output map         map<boolean, integer> oddandevensums = inputlist.stream(); \\here want split odd & array , sum of both         // not modify below code. print output list         system.out.println(oddandevensums);     } } }

you can use collectors.partitioningby want:

map<boolean, integer> result = inputlist.stream().collect(        collectors.partitioningby(x -> x%2 == 0, collectors.summingint(integer::intvalue)));

the resulting map contains sum of numbers in true key , sum of odd numbers in false key.


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