- Write a program to find a pair of number whose difference is equal to K
- Algorithm to find a pair of array element whose difference is equal to given number.

# Program to Print all Pair of Numbers Whose Difference is K

# Program to Find Next Greater Element for Every Array Element

- Write a program to find next larger element of array
- Algorithm to find next greater element using stack data structure and in O(n) time complexity.

# Program to Find the Smallest Unsorted Subarray such that Sorting it Makes Whole Array Sorted

- Write a program in C to find smallest unsorted array such that sorting this array makes whole array sorted.

# Program to find Maximum Repeating Element of Array in O(n) Time

- Write a program to find an element occurring maximum number of times in an array.
- How to find maximum repeating element of an array in O(n) time and without using any extra memory space.

# C Program to Sort an Array Containing 0, 1 and 2.

- Write a program to sort an array containing only 0, 1 and 2.
- Dutch flag algorithm to re arrange 0, 1 and 2 such that first all 0's then all 1's and at last all 2's.

# C Program to Find Floor of a Number in Sorted Array

- Write a program to find floor of a number in a sorted array.
- Algorithm to find the largest number smaller than or equal to X in a sorted integer array.

# C Program to Find Ceiling of a Number in Sorted Array

- Write a program to find ceiling of a number in a sorted array.
- Algorithm to find the smallest number greater than or equal to X in a sorted integer array.

# Program to Find Union and Intersection of Two Sorted Arrays

- Write a program to find union and intersection of two sorted integer array.
- Algorithm to find union and intersection of two sorted array.

# Program to Find Maximum Difference Between a Pair of Elements

- Write a program to find maximum difference between elements such that larger element is after smaller element.

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