Answers for "how to sum all the elements of a list in java using collections class"

inbuild method to sum of an arraylist elements in java

doubleList.stream().reduce((a,b)->a+b).get();

Posted by: Guest on October-21-2020

inbuild method to sum of an arraylist elements in java

//If you have a List<Integer>
int sum = list.stream().mapToInt(Integer::intValue).sum();

//If it's an int[]
int sum = IntStream.of(a).sum();

Posted by: Guest on October-21-2020

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