From 6b429497f9d5f45a0fbc7006e5cfce42e9266d51 Mon Sep 17 00:00:00 2001
From: ABHISHEK SINGH <115360384+abhishek2s@users.noreply.github.com>
Date: Mon, 28 Oct 2024 01:04:08 +0530
Subject: [PATCH] Create hashing.java

code of hasing in java
---
 hashing.java | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 hashing.java

diff --git a/hashing.java b/hashing.java
new file mode 100644
index 0000000000..ca90481a2e
--- /dev/null
+++ b/hashing.java
@@ -0,0 +1,44 @@
+// Java program to create HashMap from an array
+// by taking the elements as Keys and
+// the frequencies as the Values
+
+import java.util.*;
+
+class GFG {
+
+	// Function to create HashMap from array
+	static void createHashMap(int arr[])
+	{
+		// Creates an empty HashMap
+		HashMap<Integer, Integer> hmap = new HashMap<Integer, Integer>();
+
+		// Traverse through the given array
+		for (int i = 0; i < arr.length; i++) {
+
+			// Get if the element is present
+			Integer c = hmap.get(arr[i]);
+
+			// If this is first occurrence of element
+			// Insert the element
+			if (hmap.get(arr[i]) == null) {
+				hmap.put(arr[i], 1);
+			}
+
+			// If elements already exists in hash map
+			// Increment the count of element by 1
+			else {
+				hmap.put(arr[i], ++c);
+			}
+		}
+
+		// Print HashMap
+		System.out.println(hmap);
+	}
+
+	// Driver method to test above method
+	public static void main(String[] args)
+	{
+		int arr[] = { 10, 34, 5, 10, 3, 5, 10 };
+		createHashMap(arr);
+	}
+}