Java/DataStructures/HashMap/Hashing/HashMap.java

class HashMap {
	private int hsize;
	private LinkedList[] buckets;

	public HashMap(int hsize) {
		buckets = new LinkedList[hsize];
		for (int i = 0; i < hsize ; i++ ) {
			buckets[i] = new LinkedList();
			// Java requires explicit initialisaton of each object 
		}
		this.hsize = hsize;
	}

	public int hashing(int key) {
		int hash = key % hsize;
		if(hash < 0)
			hash += hsize;
		return hash;
	}
	
	public void insertHash(int key) {
		int hash = hashing(key);
		buckets[hash].insert(key);
	}


	public void deleteHash(int key) {
		int hash = hashing(key);

		buckets[hash].delete(key);
	}
	public void displayHashtable() {
		for (int i = 0;i < hsize ; i++) {
			System.out.printf("Bucket %d :",i);
			buckets[i].display();
		}
	}

}