From 295f13d5bd00f796babb9e3e09272831e08755be Mon Sep 17 00:00:00 2001
From: trivernis <trivernis@gmail.com>
Date: Sun, 9 Feb 2020 19:24:27 +0100
Subject: [PATCH] Add check for if the first digit is smaller than 5

---
 rotatable.txt | 81 ---------------------------------------------------
 src/main.rs   | 10 ++++---
 2 files changed, 6 insertions(+), 85 deletions(-)
 delete mode 100644 rotatable.txt

diff --git a/rotatable.txt b/rotatable.txt
deleted file mode 100644
index 33aa26e..0000000
--- a/rotatable.txt
+++ /dev/null
@@ -1,81 +0,0 @@
-66
-11
-99
-666
-44
-555
-444
-77
-22
-333
-222
-55
-111
-999
-1111
-33
-2222
-777
-3333
-4444
-88
-6666
-888
-5555
-7777
-9999
-11111
-8888
-22222
-33333
-44444
-66666
-55555
-102564
-77777
-88888
-99999
-111111
-153846
-128205
-142857
-222222
-205128
-230769
-444444
-333333
-555555
-666666
-888888
-777777
-999999
-1111111
-2222222
-4444444
-3333333
-6666666
-5555555
-8888888
-7777777
-9999999
-11111111
-22222222
-44444444
-33333333
-66666666
-55555555
-88888888
-77777777
-99999999
-111111111
-22
-222222
-333333333
-444444444
-666666666
-555555555
-777777777
-888888888
-999999999
-1111111111
-2222222222
diff --git a/src/main.rs b/src/main.rs
index cdd57ac..523e877 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -63,12 +63,14 @@ fn get_rotatable(tx: Sender<BigUint>, sen_time: Sender<bool>, start: u64, end: B
     while num < end {
         if num.is_odd() || !(&num % 10 as u64).is_zero() {
             let mut digits = ubig_digits(num.clone());
-            if digits.first() >= digits.last()
-                && !(digits[0] % 2 == 0 && digits[1] % 2 != 0) {
+            let first = *digits.first().unwrap() as u64;
+            let last = *digits.last().unwrap() as u64;
+            if (last < 5 || first == last)
+                && first >= last
+                && !(first % 2 == 0 && digits[1] % 2 != 0) {
                 digits.rotate_left(1);
-                let first = *digits.first().unwrap() as u64;
                 let num_rotated = ubig_from_digits(digits);
-                if (first == 0 || (&num_rotated % first).is_zero()) && (&num_rotated % &num).is_zero() {
+                if (&num_rotated % &num).is_zero() {
                     let _ = tx.send(num.clone());
                 }
             }