frew@mclean.com > sumUp
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Return the sum of all of the integers 1..n -- use the formula n(n+1)/2 -- Example: sumUp(4) = 4 + 3 + 2 + 1 = 10 sumUp(4) → 10 sumUp(1) → 1 sumUp(10) → 55 Go...Save, Compile, Run (ctrl-enter) public int sumUp(int n) { } Go Editor font size %:75100125150 Shorter output

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