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Task/Unbias-a-random-generator/Phix/unbias-a-random-generator.phix

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+function randN(integer N)
+    return rand(N) = 1
+end function
+
+function unbiased(integer N)
+integer a
+    while 1 do
+        a = randN(N)
+        if a!=randN(N) then
+            return a
+        end if
+    end while
+end function
+
+constant n = 10000
+integer cb, cu
+for b=3 to 6 do
+    cb = 0
+    cu = 0
+    for i=1 to n do
+        cb += randN(b)
+        cu += unbiased(b)
+    end for
+    printf(1, "%d: %5.2f%%  %5.2f%%\n", {b, 100 * cb / n, 100 * cu / n})
+end for