Top 100 Codes

PrepInsta Top 100 Codes

Below You will find some of the most important codes in languages like C, C++ and Java. These codes are of prime importance for college semester exams and also for various online tests and interviews of the companies offering placements within varying range in LPA.

These codes are very important since these will help you clear your basic concepts in various languages.

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Important Codes related to Arrays

  • Find Smallest Element in an Array : C | C++ | Java | Python
  • Find Second Smallest Element in an Array : C | C++ | Java | Python
  • Find Largest element in an array : C | C++ | Java | Python
  • Find the Smallest and largest element in an array : C | C++ | Java | Python
  • Calculate the sum of elements in an array : C | C++ | Java | Python
  • Reverse an Array : C | C++ | Java | Python 
  • Sort an Array in Ascending and Descending Order : C | C++ | Java | Python
  • Sort first half in ascending order and second half in descending : C | C++ | Java | Python
  • Sort the elements of an array : C | C++ | Java | Python
  • Finding the frequency of elements in an array : C | C++ | Java | Python
  • Finding the Longest Palindrome in an Array : C | C++| Java| Python
  • Counting Distinct Elements in an Array : C | C++ | Java| Python
  • Finding  Repeating elements in an Array : C | C++ | Java | Python
  • Finding Non Repeating elements in an Array : C | C++ | Java | Python
  • Removing Duplicate elements from an array : C | C++ | Java
  • Finding Minimum scalar product of two vectors : C | C++ | Java | Python
  • Finding Maximum scalar product of two vectors in an array : C | C++ | Java | Python
  • Counting the number of even and odd elements in an array : C | C++ | Java | Python
  • Find all Symmetric pairs in an array : C | C++ | Java | Python
  • Find maximum product sub-array in a given array : C | C++ | Java
  • Finding Arrays are disjoint or not : C | C++ | Java | Python
  • Determine Array is a subset of another array or not : C | C++ | Java | Python
  • Determine can all numbers of an array be made equal : C | C++ | Java
  • Finding Minimum sum of absolute difference of given array : C | C++ | Java | Python
  • Sorting elements of an array by frequency : C | C++ | Java
  • Sort an array according to the order defined by another array : C | C++ | Java
  • Replace each element of the array by its rank in the array : C | C++ | Java
  • Finding equilibrium index of an array : C | C++ | Java| Python
  • Rotation of elements of array- left and right : C | C++ | Java| Python
  • Block swap algorithm for array rotation : C | C++ | Java| Python
  • Juggling algorithm for array rotation : C | C++ | Java | Python
  • Finding Circular rotation of an array by K positions : C | C++ | Java | Python

You can find the below Programs in all languages

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Operations on Strings

Operations on Strings

  • Length of the string without using strlen() function : C | C++ | Java | Python
  • Toggle each character in a string : C | C++ | Java | Python
  • Count the number of vowels : C | C++ | Java | Python
  • Remove the vowels from a String : C | C++ | Java | Python
  • Check if the given string is Palindrome or not : C | C++ | Java | Python
  • Print the given string in reverse order : C | C++ | Java | Python
  • Remove all characters from string except alphabets : C | C++ | Java | Python
  • Remove spaces from a string : C | C++ | Java | Python
  • Remove brackets from an algebraic expression : C | C++ | Java | Python
  • Count the sum of numbers in a string : C | C++ | Java | Python
  • Capitalize the first and last character of each word of a string : C | C++ | Java | Python
  • Calculate frequency of characters in a string : C | C++ | Java | Python
  • Find non-repeating characters in a string : C | C++ | JAVA | Python
  • Check if two strings are Anagram or not : C | C++ | Java | Python
  • Replace a sub-string in a string: C | C++ | Java | Python
  • Count common sub-sequence in two strings : C | C++ | Java | Python
  • Check if two strings match where one string contains wildcard characters : C | C++ | Java | Python

Pattern Printing

Visit PrepInsta Pattern printing Tutorial Dashboard here

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