You should use fold instead of reduce. Because if the array is empty then reduce method will give error.

Thank you for the opportunity, but have no room ATM.

Thanks Nick, would you like to work togerther on a project?

This is the method of java.util.stream.IntStream

So what object is calling sum(). becuase sum() is not a method in Arrays, and I can't find it in the methods in Stream.

I failed to realize too facepalm. My degree is crying right now LMAO

I don't understand how this is possible, when results are rounded to 2 digits. Do you mean sample tests? I'not applying rounding there because they are too basic.

Expected should be:

[31.52,63.04,94.56,126.08,157.6,189.12,220.64,252.16,283.68,315.2,346.72,378.24,409.76,441.28,472.8,504.32,535.84,567.36,598.88,630.4,661.92,693.44,724.96,756.48,788,819.52,851.04,882.56,914.08,945.6,977.12,1008.64,1040.16,1071.68,1103.2,1134.72,1166.24,1197.76,1229.28,1260.8,1292.32,1323.84,1355.36,1386.88,1418.4,1449.92,1481.44,1512.96,1544.48,1576,1607.52]

Issue above ^

Prolog random tests:

Input
[51,31.52]
Actual
[31.52,63.04,94.56,126.08,157.6,189.12,220.64,252.16,283.68,315.2,346.71999999999997,378.24,409.76,441.28,472.8,504.32,535.84,567.36,598.88,630.4,661.92,693.4399999999999,724.96,756.48,788.0,819.52,851.04,882.56,914.08,945.6,977.12,1008.64,1040.16,1071.68,1103.2,1134.72,1166.24,1197.76,1229.28,1260.8,1292.32,1323.84,1355.36,1386.8799999999999,1418.4,1449.92,1481.44,1512.96,1544.48,1576.0,1607.52],
Expected
[31.52,63.04,94.56,126.08,157.6,189.12,220.64000000000001,252.16000000000003,283.68,315.2,346.71999999999997,378.23999999999995,409.75999999999993,441.2799999999999,472.7999999999999,504.3199999999999,535.8399999999999,567.3599999999999,598.8799999999999,630.3999999999999,661.9199999999998,693.4399999999998,724.9599999999998,756.4799999999998,787.9999999999998,819.5199999999998,851.0399999999997,882.5599999999997,914.0799999999997,945.5999999999997,977.1199999999997,1008.6399999999996,1040.1599999999996,1071.6799999999996,1103.1999999999996,1134.7199999999996,1166.2399999999996,1197.7599999999995,1229.2799999999995,1260.7999999999995,1292.3199999999995,1323.8399999999995,1355.3599999999994,1386.8799999999994,1418.3999999999994,1449.9199999999994,1481.4399999999994,1512.9599999999994,1544.4799999999993,1575.9999999999993,1607.5199999999993]

Welp, I feel like an idiot.