I am new to Java programming and data structures. Nevertheless I could implement the following code after so many efforts. There I need to insert values to nodes, and print the values in each node to demonstrate all 03 types of depth first traversal techniques with the help of recursion. PreOrder traversal PostOrder traversal InOrder traversal I have developed 03
Tag: recursion
Can’t print last digit of a number while displaying all digits of a number using recursion?
I was trying to print digits of a number using recursion. The function I defined returns all the digits but I fail to print the last digit. Can any one point out what’s wrong in the code? Is there any other logic which is better than this with recursion? Answer That’s because you return the last character, but you print
Analysis of recursive approach for rotating an array of integers
While solving Array rotation on LeetCode, I wrote a recursive algorithm to solve the problem: Given an array, rotate the array to the right by k steps, where k is non-negative. Example 1: Input: nums = [1,2,3,4,5,6,7], k = 3 Output: [5,6,7,1,2,3,4] Explanation: rotate 1 steps to the right: [7,1,2,3,4,5,6] rotate 2 steps to the right: [6,7,1,2,3,4,5] rotate 3 steps
Recursion Showing Adjacent Blank Mines in Minesweeper
I am fairly new to Java and I have been working on a Minesweeper game. I am trying to get the adjacent cells to be revealed recursively when an empty cell is clicked. I do this by calling showCell() shown below: Cells array declaration and population: toggleFlag() showCell() The problem I am having is when I hit this portion of
StackOverflowError on recursive algorithm
I’m trying to code a recursive algorithm in order to generate a valid board(unique solution) for a game called kakuro. When executing the program I keep getting a StackOverflowError. I tried debugging my code and it is working as expected, but it suddenly crashes in a non recursive method. I have been reading about this issue on the internet and
Array from recursive call being overwritten
We’re making a program to solve an asterisk sudoku via a recursive approach with back tracking. The solveIt method calls the solve method which is the recursive method. grid is declared before to be a 9×9 2D array that contains the puzzle to be filled in. If there is one solution, the program must print out the completed puzzle however
Finding the Base 2 Logarithm of a number using Recursion in java
I’m trying to write a recursive method in Java to find the base 2 log for multiples of 2. I’ve successfully computed the log using this recursive method. import java.util.*; class temp { static …
what is wrapper function and how to use it?
For my homework, I am required to use a function called wrapper function to validate the parameter for a recursive function, which I don’t understand what it means. All i understand from wrapper function is it does nothing but just wraps around a function eg: I dont even know if the code above is the correct implementation for wrapper, but
how recursive function works level by level?
I have trouble on understating how recursion works, I have been struggling this for a while! Could anyone can help me with this? I’d really appreciate that, and here is the code for instance: when we pass 3 into the function, the output will be: Since the recursion call is between two printings, I guess the way how it works
How to calculate RECURSIVELY 2D array column in Java
I am stuck with a homework question for something fairly stupid. The mission is to find the smallest column sum on a 2D array and return it’s index. No loops allowed, only recursion. I managed the code, but I’m stuck with the simple task of calculating the column itself. This is the code I wrote so far: And this is