049 ok

049/main.rs

@@ -0,0 +1,66 @@
+use std::collections::HashSet;
+
+fn er() -> HashSet<u32> {
+    let mut nums = Vec::new();
+    let size = 9999;
+    for n in 0..size+1 { nums.push(true); }
+    let mut p = 1;
+    loop {
+        let mut found = false;
+        for i in p+1..size {
+            if nums[i] {
+                found = true;
+                p = i;
+                break;
+            }
+        }
+        if !found { break; }
+        for i in (2 * p .. size).step_by(p) {
+            nums[i] = false;
+        }
+    }
+    let mut res = HashSet::new();
+    for i in 2..size {
+        if nums[i] { res.insert(i as u32); }
+    }
+    return res;
+}
+
+fn is_prms(a: u32, b: u32) -> bool {
+    let aa = a.to_string();
+    let bb = b.to_string();
+
+    let mut hsa = HashSet::new();
+    let mut hsb = HashSet::new();
+    for c in aa.chars() {
+        hsa.insert(c);
+    }
+    for c in bb.chars() {
+        hsb.insert(c);
+    }
+    
+    for _ in hsa.difference(&hsb) {
+        return false;
+    }
+    return true;
+
+}
+
+fn main() {
+    let hs = er();
+
+    for p in hs.iter() {
+        let p1 = *p;
+        let p2 = p1 + 3330;
+        let p3 = p2 + 3330;
+        if hs.contains(&p1) && hs.contains(&p2) && hs.contains(&p3) {
+            if is_prms(p1, p2) && is_prms(p2, p3) {
+                println!("{} {} {}", p1, p2, p3);
+            }
+        } 
+    }
+
+    //let pp = is_prms(1487, 3300);
+    //println!("{}", pp);
+
+}