add 1726

Author: fishercoder1534

README.md

@@ -8,6 +8,7 @@ _If you like this project, please leave me a star._ ★
 
 |  #  |      Title     |   Solutions   | Video  | Difficulty  | Tag                   
 |-----|----------------|---------------|--------|-------------|-------------
+|1726|[Tuple with Same Product](https://leetcode.com/problems/tuple-with-same-product/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1726.java) ||Medium|Array|
 |1725|[Number Of Rectangles That Can Form The Largest Square](https://leetcode.com/problems/number-of-rectangles-that-can-form-the-largest-square/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1725.java) ||Easy|Greedy|
 |1721|[Swapping Nodes in a Linked List](https://leetcode.com/problems/swapping-nodes-in-a-linked-list/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1721.java) ||Medium|LinkedList|
 |1720|[Decode XORed Array](https://leetcode.com/problems/decode-xored-array/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1720.java) ||Easy|Bit Manipulation|

src/main/java/com/fishercoder/solutions/_1726.java

@@ -0,0 +1,22 @@
+package com.fishercoder.solutions;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class _1726 {
+    public static class Solution1 {
+        public int tupleSameProduct(int[] nums) {
+            Map<Integer, Integer> map = new HashMap<>();
+            int count = 0;
+            for (int i = 0; i < nums.length - 1; i++) {
+                for (int j = i + 1; j < nums.length; j++) {
+                    int product = nums[i] * nums[j];
+                    count += 8 * map.getOrDefault(product, 0);
+                    map.put(product, map.getOrDefault(product, 0) + 1);
+                }
+            }
+            return count;
+        }
+
+    }
+}

src/test/java/com/fishercoder/_1726Test.java

@@ -0,0 +1,42 @@
+package com.fishercoder;
+
+import com.fishercoder.solutions._1726;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class _1726Test {
+    private static _1726.Solution1 solution1;
+
+    @BeforeClass
+    public static void setup() {
+        solution1 = new _1726.Solution1();
+    }
+
+    @Test
+    public void test1() {
+        assertEquals(8, solution1.tupleSameProduct(new int[]{2, 3, 4, 6}));
+    }
+
+    @Test
+    public void test2() {
+        assertEquals(16, solution1.tupleSameProduct(new int[]{1, 2, 4, 5, 10}));
+    }
+
+    @Test
+    public void test3() {
+        assertEquals(40, solution1.tupleSameProduct(new int[]{2, 3, 4, 6, 8, 12}));
+    }
+
+    @Test
+    public void test4() {
+        assertEquals(0, solution1.tupleSameProduct(new int[]{2, 3, 5, 7}));
+    }
+
+    @Test
+    public void test5() {
+        assertEquals(128, solution1.tupleSameProduct(new int[]{1, 2, 3, 4, 6, 8, 12, 24}));
+    }
+
+}