To understand this example, you should have the knowledge of the following C programming topics: Example 1: Input: N = 2 Output: 4 Explanation: The reverse of 2 is 2 and after raising power of 2 by 2 we get 4 which gives remainder as 4 by dividing 1000000007. Your Task: You don't need to read ot print anything. Find Complete Code at GeeksforGeeks Article: https://www.geeksforgeeks.org/reversing-queue-using-recursion/ This video is contributed by Parul Shandilya. void insertAtBottom((): First pops all stack items and stores the popped item in function call stack using recursion. Ask Question Asked 6 years, 1 month ago. ... We need to be careful not to call the recursion more than once, because using several recursive calls in one step creates exponential complexity that cancels out with using a fraction of n. Example 1: Input : str = "abc" Output: a ab abc ac b bc c​ Explanation : There are 7 substrings that can be formed from abc. For queries regarding questions and quizzes, use the comment area below respective pages. Examples of Content related issues. Note: As answers can be very large, print the result modulo 10 9 + 7. A Computer Science portal for geeks. A Computer Science portal for geeks. And when stack becomes empty, pushes new item and all items stored in call stack. A Computer Science portal for geeks. Software related issues. In the above program, you calculate the power using a recursive function power(). Power function using recursion. Execution steps; Iteration power() powerRaised result; 1: power(3, 4) 4: 3 * result 2: 2: power… Active 3 months ago. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview … In simple terms, the recursive function multiplies the base with itself for powerRaised times, which is: 3 * 3 * 3 * 3 = 81. Example 2: Input: str = "aa" Output: a a aa Explanation : There are 3 substrings that can be formed from aa. A Computer Science portal for geeks. Given a number and its reverse. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview … The idea is to simply store the results of subproblems, so that we … So we need a function that inserts at the bottom of a stack using the above given basic stack function. Given a string S find all possible substrings of the string in lexicographically-sorted order. Find that number raised to the power of its own reverse. Dynamic Programming is mainly an optimization over plain recursion. C program to calculate the power using recursion In this example, you will learn to calculate the power of a number using recursion. 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