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