JAVA PROGRAMS DIFFICULT LEVEL

JAVA PROGRAMS DIFFICULT LEVEL

Java String programs
1) Java Program to count the total number of characters in a string
2) Java Program to count the total number of characters in a string 2
3) Java Program to count the total number of punctuation characters exists in a String
4) Java Program to count the total number of vowels and consonants in a string
5) Java Program to determine whether two strings are the anagram
6) Java Program to divide a string in 'N' equal parts.
7) Java Program to find all subsets of a string
8) Java Program to find the longest repeating sequence in a string
9) Java Program to find all the permutations of a string
10) Java Program to remove all the white spaces from a string
11) Java Program to replace lower-case characters with upper-case and vice-versa
12) Java Program to replace the spaces of a string with a specific character
13) Java Program to determine whether a given string is palindrome
14) Java Program to determine whether one string is a rotation of another
15) Java Program to find maximum and minimum occurring character in a string
16) Java Program to find Reverse of the string
17) Java program to find the duplicate characters in a string
18) Java program to find the duplicate words in a string
19) Java Program to find the frequency of characters
20) Java Program to find the largest and smallest word in a string
21) Java Program to find the most repeated word in a text file
22) Java Program to find the number of the words in the given text file
23) Java Program to separate the Individual Characters from a String
24) Java Program to swap two string variables without using third or temp variable.
25) Java Program to print smallest and biggest possible palindrome word in a given string

Java Pattern programs
1) Java Program to count the total number of punctuation characters exists in a String
2) Java program to print the following pattern
3) Java program to print the following pattern 2
4) Java program to print the following pattern 3
5) Java program to print the following pattern 4
6) Java program to print the following pattern 5
7) Java program to print the following pattern on the console
8) Java program to print the following pattern on the console 2
9) Java program to print the following pattern on the console 3
10) Java program to print the following pattern on the console 4
11) Java program to print the following pattern on the console 5
12) Java program to print the following pattern on the console 6
13) Java program to print the following pattern on the console 7
14) Java program to print the following pattern on the console 8
15) Java program to print the following pattern on the console 9
16) Java program to print the following pattern on the console 10
17) Java program to print the following pattern on the console 11
18) Java program to print the following pattern on the console 12
19) Java program to print the following spiral pattern on the console

Java Singly Linked List Programs
1) Singly linked list Examples in Java
2) Java Program to create and display a singly linked list 3) Java program to create a singly linked list of n nodes and  count the number of nodes

4) Java program to create a singly linked list of n nodes and display it in reverse order
5) Java program to delete a node from the beginning of the singly linked list
6) Java program to delete a node from the middle of the singly linked list
7) Java program to delete a node from the end of the singly linked list
8) Java program to determine whether a singly linked list is the palindrome
9) Java program to find the maximum and minimum value node from a linked list
10) Java Program to insert a new node at the middle of the singly linked list
11) Java program to insert a new node at the beginning of the singly linked list
12) Java program to insert a new node at the end of the singly linked list
13) Java program to remove duplicate elements from a singly linked list
14) Java Program to search an element in a singly linked list

Java Circular Linked List Programs

1) Java program to create and display a Circular Linked List
2) Java program to create a Circular Linked List of N nodes and count the number of nodes
3) Java program to create a Circular Linked List of n nodes and  display it in reverse order

4) Java program to delete a node from the beginning of the 

Circular Linked List
5) Java program to delete a node from the end of the Circular 
Linked List
6) Java program to delete a node from the middle of the Circular Linked List
7) Java program to find the maximum and minimum value node from a circular linked list
8) Java program to insert a new node at the beginning of the Circular Linked List
9) Java program to insert a new node at the end of the Circular Linked List
10) Java program to insert a new node at the middle of the Circular Linked List
11) Java program to remove duplicate elements from a Circular Linked List
12) Java program to search an element in a Circular Linked List
13) Java program to sort the elements of the Circular Linked List

Java Doubly Linked List Programs
1) Java program to convert a given binary tree to doubly linked list
2) Java program to create a doubly linked list from a ternary tree
3) Java program to create a doubly linked list of n nodes and  count the number of nodes
4) Java program to create a doubly linked list of n nodes and display it in reverse order
5) Java program to create and display a doubly linked list
6) Java program to delete a new node from the beginning of the doubly linked list
7) Java program to delete a new node from the end of the doubly linked list
8) Java program to delete a new node from the middle of the doubly linked list
9) Java program to find the maximum and minimum value node from a doubly linked list
10) Java program to insert a new node at the beginning of the Doubly Linked list
10) Java program to insert a new node at the end of the Doubly Linked List
12) Java program to insert a new node at the middle of the Doubly Linked List
13) Java program to remove duplicate elements from a Doubly Linked List
14) Java program to rotate doubly linked list by N nodes
15) Java program to search an element in a doubly linked list
16) Java program to sort the elements of the doubly linked list
Java Tree Programs
1) Java Program to calculate the Difference between the Sum of the Odd Level and the Even Level Nodes of a Binary Tree
2) Java program to construct a Binary Search Tree and perform deletion and In-order traversal
3) Java program to convert Binary Tree to Binary Search Tree
4) Java program to determine whether all leaves are at same level
5) Java program to determine whether two trees are identical
6) Java program to find maximum width of a binary tree
7) Java program to find the largest element in a Binary Tree
8) Java program to find the maximum depth or height of a tree
9) Java program to find the nodes which are at the maximum 
distance in a Binary Tree
10) Java program to find the smallest element in a tree

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