052 ok

052/main.rs

@@ -0,0 +1,39 @@
+use std::collections::HashMap;
+fn get_hs(n: u32) -> HashMap<u8, u32> {
+    let mut nn = n;
+    let mut res = HashMap::<u8, u32>::new();
+    while nn > 0 {
+        let c = (nn%10) as u8;
+        if res.contains_key(&c) {
+            res.insert(c, res[&c] + 1);
+        } else {
+            res.insert(c, 1);
+        }
+        nn /= 10;
+    }
+    return res;
+}
+
+
+fn test(n: u32) -> bool {
+    let hm = get_hs(n);
+    for i in 2..=6 {
+        let m = n * i;
+        let hmi = get_hs(m);
+        if hmi != hm {
+            return false;
+        }
+    }
+    return true;
+}
+
+fn main() {
+    for i in 1..999999 {
+    
+        if test(i) {
+            println!("{}", i);
+            break;
+        }
+    }
+
+}