update

test/prime.nas

@@ -0,0 +1,41 @@
+import("lib.nas");
+
+var is_prime=func(x){
+    for(var i=2;i<x;i+=1)
+        if(x/i==int(x/i))
+            return 0;
+    return 1;
+}
+
+var is_prime_sqrt=func(x){
+    for(var i=2;i<=math.sqrt(x);i+=1)
+        if(x/i==int(x/i))
+            return 0;
+    return 1;
+}
+
+var primes=[2];
+var filter=func(x){
+    #println(x);
+    foreach(var i;primes){
+        if(x/i==int(x/i))
+            return 0;
+        if(x>=i){
+            for(var j=i+1;j<=math.sqrt(x);j+=1)
+                if(x/j==int(x/j))
+                    return 0;
+            append(primes,x);
+            return 1;
+        }
+    }
+    append(primes,x);
+    return 1;
+}
+
+func(){
+    var cnt=0;
+    for(var i=0;i<50000;i+=1)
+        if(filter(i))
+            cnt+=1;
+    println(cnt);
+}();