Suppose that I have a two dimensional array holding 8 teams (rows) and in each team there is 12-15 players. Is there a way to know the total amount of players exist in String teams[][] (WITHOUT looping)?
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1Yes. You can sums up the length of all teamsZaheer Khorajiya– Zaheer Khorajiya2015-09-18 10:46:23 +00:00Commented Sep 18, 2015 at 10:46
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Check stackoverflow.com/questions/4441099/…Anonymous Coward– Anonymous Coward2015-09-18 10:47:18 +00:00Commented Sep 18, 2015 at 10:47
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2 Answers
You can do it with streams:
long players = Arrays.stream(teams).flatMap(team -> Arrays.stream(team)).count();
1 Comment
Stephen C
... which "loops" behind the scenes :-)
You have to do it manually. Use something like this:
int count = 0;
for(int i = 0; i < teams.length; i++)
for(int j = 0; j < teams[i].length; j++)
if(a[i][j] != null)
count++;
return count;
This assumes that fields in the array that do not contain a team member are simply null.
