solves #243: Shortest Word Distance

Author: anishLearnsToCode

README.md

@@ -212,7 +212,7 @@
 | 240  | [Search a 2D Matrix II](https://leetcode.com/problems/search-a-2d-matrix-ii)                                                                                           |                                                                                      [![Java](assets/java.png)](src/SearchA2DMatrixII.java)                                                                                      |                                                                                                                                   |
 | 241  | [Different Ways to Add Parentheses](https://leetcode.com/problems/different-ways-to-add-parentheses)                                                                   |                                                                                                                                                                                                                                  |                                                                                                                                   |
 | 242  | [Valid Anagram](https://leetcode.com/problems/valid-anagram)                                                                                                           |                                                      [![Java](assets/java.png)](src/ValidAnagram.java) [![Python](assets/python.png)](python/delete_node_in_linked_list.py)                                                      |                                                                                                                                   |
-| 243  | 🔒 [Shortest Word Distance](https://leetcode.com/problems/shortest-word-distance)                                                                                      |                                                                                                                                                                                                                                  |                                                                                                                                   |
+| 243  | 🔒 [Shortest Word Distance](https://leetcode.com/problems/shortest-word-distance)                                                                                      |                                                                                    [![Java](assets/java.png)](src/ShortestWordDistance.java)                                                                                     |                                                                                                                                   |
 | 244  | 🔒 [Shortest Word Distance II](https://leetcode.com/problems/shortest-word-distance-ii)                                                                                |                                                                                                                                                                                                                                  |                                                                                                                                   |
 | 245  | 🔒 [Shortest Word Distance III](https://leetcode.com/problems/shortest-word-distance-iii)                                                                              |                                                                                                                                                                                                                                  |                                                                                                                                   |
 | 246  | 🔒 [Strobogramatic Number](https://leetcode.com/problems/strobogrammatic-number)                                                                                       |                                                                                                                                                                                                                                  |                                                                                                                                   |

src/ShortestWordDistance.java

@@ -0,0 +1,22 @@
+// https://leetcode.com/problems/shortest-word-distance
+// N: number of words, M: average word length
+// T: O(N * M)
+// S: O(1)
+
+public class ShortestWordDistance {
+    public int shortestDistance(String[] wordsDict, String word1, String word2) {
+        int result = wordsDict.length, i = -1, j = -1;
+        for (int index = 0 ; index < wordsDict.length ; index++) {
+            if (wordsDict[index].equals(word1)) {
+                i = index;
+            } else if (wordsDict[index].equals(word2)) {
+                j = index;
+            }
+
+            if (i != -1 && j != -1) {
+                result = Math.min(result, Math.abs(j - i));
+            }
+        }
+        return result;
+    }
+}