“Pair in an Array with Given Sum” is one of the favorite technical interview problems. Here, we are given an array with ‘n’ elements and a target value ‘x’. Our task is to find a pair in an array, whose sum is equal to target value ‘x’. Example (Pair in...
“Find Most Frequent Element in an Array” is one of the favourite technical interview problem based on array data structutre. Here, we are given an array of ‘n’ elements and Our task is to find the most frequent element in an array. If there are multiple elements with same highest...
“Rotate Array Elements by ‘D’ Positions” is one of the most favorite technical interview problem based on array data structure. Here, we are given an array with ‘n’ elements and a ‘d’ value. Our task is to write a program to rotate the given array by ‘d’ positions in clock...
Linear Search is the simplest and easiest searching algorithm. Linear search algorithm works by simply finding the desired element from start to end of the list. Linear search algorithm returns the index position of the element, if found in the list, else, returns false or invalid index position (i.e., -1)....
“Count All Occurrences of an Element in an Array” is a basic problem of array data structure. Here, we are given an array of size ‘n’ and an element ‘x’. Our task is to write a program to count all occurrences of an element in an array. Example (Count All...
“Find Smallest and Largest Element in an Array” is an elementary problem of an Array data structure for beginners. Here, we are given an array of size ‘n’ and our task is to find the largest and smallest element of the array. Example (Find smallest and Largest Element in an...
“Find absolute difference between odd and even elements of the array” is an elementary problem of array data structure for beginners. Here, we are given an array of size ‘n’ and our task is to find the absolute difference between odd and even elements of an array. Example: INPUT: Array...
“Count Even and Odd numbers in an Array” is an elementary problem of array data structure for beginners. Here, we are given an array of size ‘n’ and our task is to count the number of even elements and number of odd elements of an array. Example: INPUT: Enter the...
“Reverse an Array” is an elementary problem for beginners based on array data structure. Here, we are given an array containing ‘n’ elements and our task is to reverse given array. Example: INPUT ARRAY: Array[5] = {1, 2, 3, 4, 5} OUTPUT ARRAY: Array[5] = {5, 4, 3, 2, 1}...
“Find First Non-Repeating Character of the String” is a very important and popular problem asked in many technical interviews of product-based companies. Here, we are given a string of length ‘n’ and our task is to find the first non-repeating character of the string. Example: Input: COMPUTERSCIENCE Output: The first...