Updating Percent Error Calculation (#328)

Wesley-Arrington · jiegillet · commit 997128406205 · 2018-08-04T09:37:55.000+09:00
diff --git a/contents/monte_carlo_integration/code/swift/monte_carlo.swift b/contents/monte_carlo_integration/code/swift/monte_carlo.swift
@@ -38,7 +38,7 @@ func monteCarlo(n: Int) -> Double {
 func main() {
     let piEstimate = monteCarlo(n: 10000)
     print("Pi estimate is: ", piEstimate)
-    print("Percent error is: \(100*(Double.pi - piEstimate)/Double.pi)%")
+    print("Percent error is: \(100 * abs(piEstimate - Double.pi)/Double.pi)%")
 }
 
 

Original file line number	Diff line number	Diff line change
`@@ -38,7 +38,7 @@ func monteCarlo(n: Int) -> Double {`
`38`	`38`	`func main() {`
`39`	`39`	`let piEstimate = monteCarlo(n: 10000)`
`40`	`40`	`print("Pi estimate is: ", piEstimate)`
`41`		`- print("Percent error is: \(100*(Double.pi - piEstimate)/Double.pi)%")`
	`41`	`+ print("Percent error is: \(100 * abs(piEstimate - Double.pi)/Double.pi)%")`
`42`	`42`	`}`
`43`	`43`
`44`	`44`