- Fibonacci Series in Java
- Prime Number Program in Java
- Palindrome Program in Java
- Factorial Program in Java
- Armstrong Number in Java
- How to Generate Random Number in Java
- How to Print Pattern in Java
- How to Compare Two Objects in Java
- How to Create Object in Java
- How to Print ASCII Value in Java
- How to Reverse a Number in Java
- Java Program to convert Number to Word
- Automorphic Number Program in Java
- Peterson Number in Java
- Sunny Number in Java
- Tech Number in Java
- Fascinating Number in Java
- Keith Number in Java
- Neon Number in Java
- Spy Number in Java
- ATM program Java
- Autobiographical Number in Java
- Emirp Number in Java
- Sphenic Number in Java
- Buzz Number Java
- Duck Number Java
- Evil Number Java
- ISBN Number Java
- Krishnamurthy Number Java
- Bouncy Number in Java
- Mystery Number in Java
- Smith Number in Java
- Strontio Number in Java
- Xylem and Phloem Number in Java
- nth Prime Number Java
- Java Program to Display Alternate Prime Numbers
- Java Program to Find Square Root of a Number Without sqrt Method
- Java Program to Swap Two Numbers Using Bitwise Operator
- Java Program to Find GCD of Two Numbers
- Java Program to Find Largest of Three Numbers
- Java Program to Find Smallest of Three Numbers Using Ternary Operator
- Java Program to Check if a Number is Positive or Negative
- Java Program to Check if a Given Number is Perfect Square
- Java Program to Display Even Numbers From 1 to 100
- Java Program to Display Odd Numbers From 1 to 100
- Java Program to Find Sum of Natural Numbers
- Java Program to copy all elements of one array into another array
- Java Program to find the frequency of each element in the array
- Java Program to left rotate the elements of an array
- Java Program to print the duplicate elements of an array
- Java Program to print the elements of an array
- Java Program to print the elements of an array in reverse order
- Java Program to print the elements of an array present on even position
- Java Program to print the elements of an array present on odd position
- Java Program to print the largest element in an array
- Java Program to print the smallest element in an array
- Java Program to print the number of elements present in an array
- Java Program to print the sum of all the items of the array
- Java Program to right rotate the elements of an array
- Java Program to sort the elements of an array in ascending order
- Java Program to sort the elements of an array in descending order
- Java Program to Find 3rd Largest Number in an array
- Java Program to Find 2nd Largest Number in an array
- Java Program to Find Largest Number in an array
- Java to Program Find 2nd Smallest Number in an array
- Java Program to Find Smallest Number in an array
- Java Program to Remove Duplicate Element in an array
- Java Program to Print Odd and Even Numbers from an array
- How to Sort an Array in Java
- Java Matrix Programs
- Java Program to Add Two Matrices
- Java Program to Multiply Two Matrices
- Java Program to subtract the two matrices
- Java Program to determine whether two matrices are equal
- Java Program to display the lower triangular matrix
- Java Program to display the upper triangular matrix
- Java Program to find the frequency of odd & even numbers in the given matrix
- Java Program to find the product of two matrices
- Java Program to find the sum of each row and each column of a matrix
- Java Program to find the transpose of a given matrix
- Java Program to determine whether a given matrix is an identity matrix
- Java Program to determine whether a given matrix is a sparse matrix
- Java Program to Transpose matrix
- Java Program to count the total number of characters in a string
- Java Program to count the total number of characters in a string 2
- Java Program to count the total number of punctuation characters exists in a String
- Java Program to count the total number of vowels and consonants in a string
- Java Program to determine whether two strings are the anagram
- Java Program to divide a string in 'N' equal parts.
- Java Program to find all subsets of a string
- Java Program to find the longest repeating sequence in a string
- Java Program to find all the permutations of a string
- Java Program to remove all the white spaces from a string
- Java Program to replace lower-case characters with upper-case and vice-versa
- Java Program to replace the spaces of a string with a specific character
- Java Program to determine whether a given string is palindrome
- Java Program to determine whether one string is a rotation of another
- Java Program to find maximum and minimum occurring character in a string
- Java Program to find Reverse of the string
- Java program to find the duplicate characters in a string
- Java program to find the duplicate words in a string
- Java Program to find the frequency of characters
- Java Program to find the largest and smallest word in a string
- Java Program to find the most repeated word in a text file
- Java Program to find the number of the words in the given text file
- Java Program to separate the Individual Characters from a String
- Java Program to swap two string variables without using third or temp variable.
- Java Program to print smallest and biggest possible palindrome word in a given string
- Reverse String in Java Word by Word
- Reserve String without reverse() function
- Linear Search in Java
- Binary Search in Java
- Bubble Sort in Java
- Selection Sort in Java
- Insertion Sort in Java
- How to convert String to int in Java
- How to convert int to String in Java
- How to convert String to long in Java
- How to convert long to String in Java
- How to convert String to float in Java
- How to convert float to String in Java
- How to convert String to double in Java
- How to convert double to String in Java
- How to convert String to Date in Java
- How to convert Date to String in Java
- How to convert String to char in Java
- How to convert char to String in Java
- How to convert String to Object in Java
- How to convert Object to String in Java
- How to convert int to long in Java
- How to convert long to int in Java
- How to convert int to double in Java
- How to convert double to int in Java
- How to convert char to int in Java
- How to convert int to char in Java
- How to convert String to boolean in Java
- How to convert boolean to String in Java
- How to convert Date to Timestamp in Java
- How to convert Timestamp to Date in Java
- How to convert Binary to Decimal in Java
- How to convert Decimal to Binary in Java
- How to convert Hex to Decimal in Java
- How to convert Decimal to Hex in Java
- How to convert Octal to Decimal in Java
- How to convert Decimal to Octal in Java
- Java program to print the following spiral pattern on the console
- Java program to print the following pattern
- Java program to print the following pattern 2
- Java program to print the following pattern 3
- Java program to print the following pattern 4
- Java program to print the following pattern 5
- Java program to print the following pattern on the console
- Java program to print the following pattern on the console 2
- Java program to print the following pattern on the console 3
- Java program to print the following pattern on the console 4
- Java program to print the following pattern on the console 5
- Java program to print the following pattern on the console 6
- Java program to print the following pattern on the console 7
- Java program to print the following pattern on the console 8
- Java program to print the following pattern on the console 9
- Java program to print the following pattern on the console 10
- Java program to print the following pattern on the console 11
- Java program to print the following pattern on the console 12
- Singly linked list Examples in Java
- Java Program to create and display a singly linked list
- Java program to create a singly linked list of n nodes and count the number of nodes
- Java program to create a singly linked list of n nodes and display it in reverse order
- Java program to delete a node from the beginning of the singly linked list
- Java program to delete a node from the middle of the singly linked list
- Java program to delete a node from the end of the singly linked list
- Java program to determine whether a singly linked list is the palindrome
- Java program to find the maximum and minimum value node from a linked list
- Java Program to insert a new node at the middle of the singly linked list
- Java program to insert a new node at the beginning of the singly linked list
- Java program to insert a new node at the end of the singly linked list
- Java program to remove duplicate elements from a singly linked list
- Java Program to search an element in a singly linked list
- Java program to create and display a Circular Linked List
- Java program to create a Circular Linked List of N nodes and count the number of nodes
- Java program to create a Circular Linked List of n nodes and display it in reverse order
- Java program to delete a node from the beginning of the Circular Linked List
- Java program to delete a node from the end of the Circular Linked List
- Java program to delete a node from the middle of the Circular Linked List
- Java program to find the maximum and minimum value node from a circular linked list
- Java program to insert a new node at the beginning of the Circular Linked List
- Java program to insert a new node at the end of the Circular Linked List
- Java program to insert a new node at the middle of the Circular Linked List
- Java program to remove duplicate elements from a Circular Linked List
- Java program to search an element in a Circular Linked List
- Java program to sort the elements of the Circular Linked List
- Java program to convert a given binary tree to doubly linked list
- Java program to create a doubly linked list from a ternary tree
- Java program to create a doubly linked list of n nodes and count the number of nodes
- Java program to create a doubly linked list of n nodes and display it in reverse order
- Java program to create and display a doubly linked list
- Java program to delete a new node from the beginning of the doubly linked list
- Java program to delete a new node from the end of the doubly linked list
- Java program to delete a new node from the middle of the doubly linked list
- Java program to find the maximum and minimum value node from a doubly linked list
- Java program to insert a new node at the beginning of the Doubly Linked list
- Java program to insert a new node at the end of the Doubly Linked List
- Java program to insert a new node at the middle of the Doubly Linked List
- Java program to remove duplicate elements from a Doubly Linked List
- Java program to rotate doubly linked list by N nodes
- Java program to search an element in a doubly linked list
- Java program to sort the elements of the doubly linked list
- Java Program to calculate the Difference between the Sum of the Odd Level and the Even Level Nodes of a Binary Tree
- Java program to construct a Binary Search Tree and perform deletion and In-order traversal
- Java program to convert Binary Tree to Binary Search Tree
- Java program to determine whether all leaves are at same level
- Java program to determine whether two trees are identical
- Java program to find maximum width of a binary tree
- Java program to find the largest element in a Binary Tree
- Java program to find the maximum depth or height of a tree
- Java program to find the nodes which are at the maximum distance in a Binary Tree
- Java program to find the smallest element in a tree
- Java program to find the sum of all the nodes of a binary tree
- Java program to find the total number of possible Binary Search Trees with N keys
- Java program to implement Binary Tree using the Linked List
- Java program to search a node in a Binary Tree
- Candy Distribution Problem in Java
- Find Rectangle in a Matrix with Corner as 1 in Java
- Minimum Number of Taps to Open to Water a Garden in Java
- Seven Segment Display Problem in Java
- Split Array Largest Sum in Java
- Find Original Array from a Double Array in Java
- Minimum Lights to Activate Problem in Java
- Rotate List in Java
- Count of Range Sum Problem in Java
- Create A Tree of Coprime in Java
- Convert Integer to Roman Numerals in Java
- Check if n and its Double Exist or not in Java
- Array of Doubled Pair Problem in Java
- Tag Content Extractor Problem in Java
- Convert Roman to Integer in Java
- Minimum Number of Flips to Convert Binary Matrix into Zero Matrix in Java
- XOR of Array Elements Except Itself in Java
- Check If the Given Array is Mirror Inverse in Java
- How to Create a Mirror Image of A 2D Array in Java
- Add Numbers Represented by Linked Lists in Java
- Majority Element In an Array in Java
- Block Swap Algorithm or Array Rotation in Java
- Minimum Difference Among Group Size Two in Java
- Missing Number in An Arithmetic Progression in Java
- Peak Index of Mountain Array Problem in Java
- Minimum Number of Meeting Room Required Problem in Java
- Move Zeros to End in Java
- Count Inversions in an array in Java
- Count Smaller Elements on The Right Side in Java
- Interleaving String Problem in Java
- Bulb Chain Problem in Java
- Java program to check whether two strings are anagram or not
- Java Program to find duplicate characters in a string
- Java Program to Print Spiral Pattern
- Java Program to reverse each word in String
- Java Program to check whether one string is a rotation of another
- Java program to find the percentage of uppercase, lowercase, digits and special characters in a string
- Java Program to prove that strings are immutable in java
- Java program to reverse a given string with preserving the position of spaces
- Nth Node from The End of a Linked List in Java
- Java Program to capitalize each word in String
How do you find duplicate characters in a string?7 Jan 2025 | 1 min read Following program demonstrate it. File: DuplicateCharFinder .java Output: is 3 times i is 2 times n is 2 times y is 2 times Next TopicJava program to print spiral pattern |
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