Question

I want to add up all numbers from 1 to 1000000.

range = 1..1000000
println range.each { it * it }.sum()

As a result I get 1784293664 instead of 500000500000. I assume, I need a BigInteger. But when I try

range = 1..1000000
println range.each { it * it }.sum().toBigInteger()

nothing changes.

Where is my mistake?

Answer 1

Your range is of type IntRange. Here’s a correct one:

range = 1G..1000000G
println range.each { it * it }.sum()