initial commit

7.ps1

@@ -0,0 +1,20 @@
+$arr = New-Object bool[] 500000
+$arr[0] = $arr[1] = $TRUE
+$count = 0
+for ($i=2; $i -lt $arr.Length; $i++)
+{
+	if ($arr[$i] -eq $TRUE)
+	{
+		continue
+	}
+	for ($j=$i*2; $j -lt $arr.Length; $j += $i)
+	{
+		$arr[$j] = $TRUE
+	}
+	$count ++
+	write-host "$i is $count"
+	if ($count -eq 10001)
+	{
+		break
+	}
+}