Contents
How do you find unique pairs in array?
Efficient Approach
- Take integer arrays arr[] with integer elements and length as size.
- Function unique_pair(int arr[], int size) takes array and its length and returns the number of unique pairs such that in pair (arr[i],arr[j]) index i
- Take the initial value of count as 0.
- Take the temp variable and set it to 0.
How do you find an array for a specific value?
Use filter if you want to find all items in an array that meet a specific condition. Use find if you want to check if that at least one item meets a specific condition. Use includes if you want to check if an array contains a particular value. Use indexOf if you want to find the index of a particular item in an array.
How do I find a number in an sorted array?
Given a sorted array of integer numbers, write a function which returns zero-based position on which the specified value is located. Function should return negative value if requested number cannot be found in the array. If value occurs more than once, function should return position of the first occurrence.
How to sort an array in descending order?
Traverse the array and check if the number is prime. If it is prime, store it in a vector. Then, sort the vector in descending order. Again traverse the array and replace the prime numbers with the vector elements one by one. Below is the implementation of the above approach:
How to sort an array with 1 to n numbers?
You have given an array which contain 1 to n element, your task is to sort this array in an efficient way and without replace with 1 to n numbers. Recommended: Please try your approach on {IDE} first, before moving on to the solution.
How to find the position of an element in an array?
If the array is infinite, that means we don’t have proper bounds to apply binary search. So in order to find position of key, first we find bounds and then apply binary search algorithm. Let low be pointing to 1st element and high pointing to 2nd element of array, Now compare key with high index element,
How are elements entered in an array in C?
As we all know, an array is a collection or sequential arrangement of elements in any given order. Arrays form the basics of the C programming language. As you can see in the photo uploaded above, the elements are first entered in no particular order. The elements entered here are 4, 6, 2, 1 and 3.