Write a java program to find common elements in three sorted arrays.
Given three sorted arrays, write a code to print intersection of three sorted arrays.
For example –
arr1 = {1, 5, 10, 20, 40, 80};
arr2 = {6, 7, 20, 80, 100};
arr3 = {3, 4, 15, 20, 30, 70, 80, 120};
Output : {20, 80}
20 and 80 are the common elements in 3 arrays. These two elements are the intersection of 3 sorted arrays.
Write a java program to reverse a string using stack data structure. Given an input string, We have to write a java code to reverse a string using stack.
In my previous tutorial, I have explained java program to reverse a string using recursion.
Before solving this problem, Let’s understand what is a stack data structure.
Find pairs with given sum in a sorted array.
Given an array A of size N. Write a code to find all pairs in the array that sum to a number equal to K. If no such pair exists then output will be –1.
NOTE – The array elements are distinct and in a sorted order.
For example –
Input :
arr[] = {1, 2, 3, 4, 5, 6, 7};
sum = 9
Output:
Pairs with given sum 9 is
Pair (2 , 7 )
Pair (3 , 6 )
Pair (4 , 5 )