# Category Title
521 csharp-project How to read and write image in C# using Visual Studio
522 csharp-project How to create Image Viewer in Microsoft Visual Studio using C#
523 reference-symbol Roman Numerals
524 reference-symbol HTML Entities - ASCII Characters
525 reference-symbol ASCII Characters
526 sorting-algorithm Quick Sort
527 sorting-algorithm Merge Sort
528 sorting-algorithm Insertion Sort
529 sorting-algorithm Selection Sort
530 sorting-algorithm Bubble Sort
531 programming How to swap two numbers using XOR
532 programming How to reverse a string and check Palindrome
533 programming How to count words in a string
534 programming Balanced Parenthesis
535 programming How to find modulus without using modulus operator
536 programming How to swap two numbers without using third variable
537 searching-algorithm Binary Search
538 searching-algorithm Linear Search
539 recursion-algorithm Tower Of Hanoi
540 recursion-algorithm Greatest Common Divisor - GCD