add 1945

fishercoder1534 · fishercoder1534 · commit 8b8019c83802 · 2021-07-25T09:07:30.000-07:00
diff --git a/README.md b/README.md
@@ -8,6 +8,7 @@ _If you like this project, please leave me a star._ &#9733;
 
 |  #  |      Title     |   Solutions   | Video  | Difficulty  | Tag        1           
 |-----|----------------|---------------|--------|-------------|-------------
+|1945|[Sum of Digits of String After Convert](https://leetcode.com/problems/sum-of-digits-of-string-after-convert/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1945.java) ||Easy||
 |1941|[Check if All Characters Have Equal Number of Occurrences](https://leetcode.com/problems/check-if-all-characters-have-equal-number-of-occurrences/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1941.java) ||Easy||
 |1936|[Add Minimum Number of Rungs](https://leetcode.com/problems/add-minimum-number-of-rungs/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1936.java) ||Medium||
 |1935|[Maximum Number of Words You Can Type](https://leetcode.com/problems/maximum-number-of-words-you-can-type/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1935.java) ||Easy|String|
diff --git a/src/main/java/com/fishercoder/solutions/_1945.java b/src/main/java/com/fishercoder/solutions/_1945.java
@@ -0,0 +1,31 @@
+package com.fishercoder.solutions;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class _1945 {
+    public static class Solution1 {
+        public int getLucky(String s, int k) {
+            List<Integer> list = new ArrayList<>();
+            for (char c : s.toCharArray()) {
+                list.add(c - 'a' + 1);
+            }
+            int sum = 0;
+            for (int i : list) {
+                if (i >= 10) {
+                    sum += i / 10;
+                }
+                sum += i % 10;
+            }
+            while (k-- > 1) {
+                int newSum = 0;
+                while (sum != 0) {
+                    newSum += sum % 10;
+                    sum /= 10;
+                }
+                sum = newSum;
+            }
+            return sum;
+        }
+    }
+}
diff --git a/src/test/java/com/fishercoder/_1945Test.java b/src/test/java/com/fishercoder/_1945Test.java
@@ -0,0 +1,42 @@
+package com.fishercoder;
+
+import com.fishercoder.solutions._1945;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class _1945Test {
+    private static _1945.Solution1 solution1;
+
+    @BeforeClass
+    public static void setup() {
+        solution1 = new _1945.Solution1();
+    }
+
+    @Test
+    public void test1() {
+        assertEquals(8, solution1.getLucky("zbax", 2));
+    }
+
+    @Test
+    public void test2() {
+        assertEquals(36, solution1.getLucky("iiii", 1));
+    }
+
+    @Test
+    public void test3() {
+        assertEquals(6, solution1.getLucky("leetcode", 2));
+    }
+
+    @Test
+    public void test4() {
+        assertEquals(8, solution1.getLucky("zbax", 2));
+    }
+
+    @Test
+    public void test5() {
+        assertEquals(8, solution1.getLucky("fleyctuuajsr", 5));
+    }
+
+}
