[LEET-3170] add 3270

Author: fishercoder1534

Diff for: paginated_contents/algorithms/4th_thousand/README.md

@@ -1,10 +1,11 @@
-| #    | Title                                                                                                                                                              | Solutions                                                                                                                        | Video                                                                         | Difficulty | Tag                                                                  
-|------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------|------------|----------------------------------------------------------------------
+| #    | Title                                                                                                                                                              | Solutions                                                                                                                         | Video                                                                         | Difficulty | Tag                                                                  
+|------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------|------------|----------------------------------------------------------------------
 | 3318 | [Find X-Sum of All K-Long Subarrays I](https://leetcode.com/problems/find-x-sum-of-all-k-long-subarrays-i/)                                                        | [Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/fourththousand/_3318.java) |                                                                               | Easy       |
 | 3314 | [Construct the Minimum Bitwise Array I](https://leetcode.com/problems/construct-the-minimum-bitwise-array-i/)                                                      | [Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/fourththousand/_3314.java) |                                                                               | Easy       |
 | 3304 | [Find the K-th Character in String Game I](https://leetcode.com/problems/find-the-k-th-character-in-string-game-i/)                                                | [Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/fourththousand/_3304.java) |                                                                               | Easy       |
-| 3300 | [Minimum Element After Replacement With Digit Sum](https://leetcode.com/problems/minimum-element-after-replacement-with-digit-sum/)                                        | [Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/fourththousand/_3300java) |                                                                               | Easy       |
+| 3300 | [Minimum Element After Replacement With Digit Sum](https://leetcode.com/problems/minimum-element-after-replacement-with-digit-sum/)                                        | [Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/fourththousand/_3300java)  |                                                                               | Easy       |
 | 3285 | [Find Indices of Stable Mountains](https://leetcode.com/problems/find-indices-of-stable-mountains/)                                                                | [Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/fourththousand/_3285.java) |                                                                               | Easy       |
+| 3270 | [Find the Key of the Numbers](https://leetcode.com/problems/find-the-key-of-the-numbers/)                      | [Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/fourththousand/_3270.java) |                                                                               | Easy       |
 | 3264 | [Final Array State After K Multiplication Operations I](https://leetcode.com/problems/final-array-state-after-k-multiplication-operations-i/)                      | [Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/fourththousand/_3264.java) |                                                                               | Easy       |
 | 3263 | [Convert Doubly Linked List to Array I](https://leetcode.com/problems/convert-doubly-linked-list-to-array-i/)                                                      | [Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/fourththousand/_3263.java) |                                                                               | Easy       |
 | 3258 | [Count Substrings That Satisfy K-Constraint I](https://leetcode.com/problems/count-substrings-that-satisfy-k-constraint-i/)                                        | [Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/fourththousand/_3258.java) |                                                                               | Easy       |

Diff for: src/main/java/com/fishercoder/solutions/fourththousand/_3270.java

@@ -0,0 +1,18 @@
+package com.fishercoder.solutions.fourththousand;
+
+public class _3270 {
+    public static class Solution1 {
+        public int generateKey(int num1, int num2, int num3) {
+            String[] padded = new String[3];
+            padded[0] = String.format("%04d", num1);
+            padded[1] = String.format("%04d", num2);
+            padded[2] = String.format("%04d", num3);
+            StringBuilder sb = new StringBuilder();
+            for (int i = 0; i < padded[0].length(); i++) {
+                sb.append(Math.min(Character.getNumericValue(padded[0].charAt(i)), Math.min(Character.getNumericValue(padded[1].charAt(i)), Character.getNumericValue(padded[2].charAt(i)))));
+            }
+            return Integer.parseInt(sb.toString());
+        }
+
+    }
+}

Diff for: src/test/java/com/fishercoder/fourththousand/_3270Test.java

@@ -0,0 +1,22 @@
+package com.fishercoder.fourththousand;
+
+import com.fishercoder.solutions.fourththousand._3270;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class _3270Test {
+    private _3270.Solution1 solution1;
+
+    @BeforeEach
+    public void setup() {
+        solution1 = new _3270.Solution1();
+    }
+
+    @Test
+    public void test1() {
+        assertEquals(0, solution1.generateKey(1, 10, 1000));
+    }
+
+}