My sudoku solver not working

I'm trying to code a sudoku solver with recursion and backtracking. But there are some problems with my code it always return false. I tried to debug, it calls next(int row, int col) method up to second row, sixth column and then it stops and backtracking starts. The problem is that the backtracking continues till first cell in my sudoku game and then it returns false. It doesnt replace t

我的数独解算器不工作

我试图用递归和回溯编码一个数独解算器。 但是,我的代码有一些问题,它总是返回false。 我试图调试,它调用next(int row,int col)方法直到第二行,第六列,然后停止并开始回溯。 问题是回溯继续,直到我的数独游戏中的第一个单元格,然后返回false。 它不会取代与其他人的细胞数量。 这里是我的代码...我错过了什么? /** Calls solve for the next cell */ private boolean next(int row, int col) { if (col &l

Recursive method for solving sudoku

I'm currently studying my second programming course in java and have a problem with an assignment that I need to complete to pass the course. Basically it's about writing a program that recursively solves sudoku with backtracking. This is the algorithm I came up with. I used a 9x9 array to represent the grid which in the beginning is filled with zeroes. checkFill checks whether it'

用于解决数独的递归方法

我目前正在学习Java的第二门编程课程,并且在完成通过课程后需要完成的任务方面存在问题。 基本上它是关于编写一个递归解决数独与回溯的程序。 这是我想出的算法。 我用一个9x9数组来表示开始时填充零的网格。 checkFill检查是否可以将数字(var)插入位置[i] [j]。 问题是它只能部分解决数独它总是返回false(没有解决方案),一些单元格仍然包含零。 我在这里做错了什么? import java.awt.*; import java.awt.event.Act

Code explanation of Sudoku Solver

I have question about the following code snippet: It is a sudoku solver which solves a Sudoku puzzle by filling the empty cells. I can not really get the logic behind the solver method. Why does it return false after trying k=1-9 and return true after looping over all cells. What I thought is we recursively get into solver() method and once the sudoku is done, it will return true back as invok

Sudoku Solver的代码解释

我对以下代码片断有疑问:它是一个数独解算器,通过填充空单元格来解决数独难题。 我无法真正理解求解器方法背后的逻辑。 为什么在尝试k = 1-9后返回false,并且在遍历所有单元格之后返回true。 我认为我们是递归地进入solver()方法,并且一旦数独完成,它将作为调用顺序返回真,最后第一个被调用的求解器()将返回true。 我认为我必须省略一些高于两个“回报”的场景。 有人能向我解释为什么这些“回归”存在? public clas

Logic Solving Algorithm (for Sudoku in Java)

I'm having issues with my logic solving algorithm. It solves puzzles with a large number of hints very well, it just has issues with puzzles that have less than 45 clues. This is the algorithm for solving. Immutable is a boolean that determines whether or not that value can be changed. cell[row][col].possibleValues is a LinkedList within a class called SudokuCell that stores the values t

逻辑解算算法(适用于Java中的Sudoku)

我的逻辑解决算法有问题。 它很好地解决了大量提示的难题,它只有少于45条线索的难题。 这是解决问题的算法。 不可变是一个布尔值,决定了该值是否可以改变。 cell [row] [col] .possibleValues是名为SudokuCell的类中的LinkedList,它存储了该网格元素可能的值。 grid.sGrid是拼图的主要int [] []数组。 removeFromCells()是一种从网格的行,列和象限中删除值的方法。 该代码将在下面提供。 第二个for循环仅用于检

Logic Solving Algorithm for Sudoku (Java)

I decided to write a logic solving algorithm for my Sudoku application. What I wrote works for a limited amount of grid values, but then the recursion stops way too soon. What my methods do: addToThirdDimension(): A three dimensional array stores any possible values that can be put into the grid value at logicGrid[x][y]. This method refreshes the three dimensional array. It does this by test

Sudoku的逻辑解算算法(Java)

我决定为我的Sudoku应用程序编写一个逻辑求解算法。 我写的内容适用于有限数量的网格值,但递归过快停止。 我的方法做什么:addToThirdDimension():三维数组存储可以放入逻辑网格值logicGrid [x] [y]的所有可能值。 该方法刷新三维数组。 它通过在每个网格索引中测试值1-9来完成此操作,并且如果它有效,则会将该数字添加到数组中。 如果不是,则将该值设置为零。 checkValues():检查三维网格中剩余多少可能性。

Using Navigation Drawer with other activities

first question here, hope I'll get the help I need :) First of all I tried to check at this thread: Same Navigation Drawer in different Activities and alot others and got nothing : Question: So I make a app that supposed to be built like this: Navigation Drawer - over all the activities. Main page that contain information Activity Activity I made the options on the drawer to go

使用导航抽屉与其他活动

第一个问题在这里,希望我会得到我需要的帮助:)首先,我试图检查这个线程:相同的导航抽屉在不同的活动和其他人,没有得到什么: 题: 所以我制作了一个应该如此构建的应用程序: 导航抽屉 - 所有活动。 包含信息的主页面 活动 活动 我在抽屉上选择了另一项活动,但是: 如何让抽屉在其他活动中可见? 我如何选择当我正在进行一项活动时,再次按下按钮上的抽屉,让我进入同一活动时,它将关闭抽屉? 有任何

UVa 562 runtime error. What can I do?

I am trying to solve Uva-562 - Dividing coins problem.My solution is giving runtime error.Error message: Here is the error message: Exception in thread "main" java.util.NoSuchElementException at java.util.Scanner.throwFor(Scanner.java:862) at java.util.Scanner.next(Scanner.java:1485) at java.util.Scanner.nextInt(Scanner.java:2117) at java.util.Scanner.nextInt(Scanner.java:2076) at Mai

UVa 562运行时错误。 我能做什么?

我试图解决Uva-562 - 分币问题。我的解决方案是给运行时错误。错误消息: 这里是错误消息:java.util.Scanner.throwFor(Scanner.java:862)java.util.Scanner.next(Scanner.java:1485)java中的线程“main”java.util.NoSuchElementException中的异常。在Main.main(Main.java:73)处的java.util.Scanner.nextInt(Scanner.java:2076)上的util.Scanner.nextInt(Scanner.java:2117) 这是我的代码: package com.example.r

Java.util.NoSuchElement Exception

import java.util.Scanner; class Codechef { public static void main (String[] args) { Scanner in=new Scanner(System.in); int T= in.nextInt(); for(int k=0;k<T;) { int M=in.nextInt(); int N=in.nextInt(); int product=M*N; Double result=0.0; for(int i=2;i<product/2;i++) { if((product%Math.pow(i,2))==0) { result=product/Math.pow(

Java.util.NoSuchElement异常

import java.util.Scanner; class Codechef { public static void main (String[] args) { Scanner in=new Scanner(System.in); int T= in.nextInt(); for(int k=0;k<T;) { int M=in.nextInt(); int N=in.nextInt(); int product=M*N; Double result=0.0; for(int i=2;i<product/2;i++) { if((product%Math.pow(i,2))==0) { result=product/Math.pow(

Life Universe and Everything

I am new to CodeChef and I am getting the following output as error on CodeChef (An online platform for coding) editor and I am not able to submit my code. I want to ask 1)Is My Approach towards the problem right and 2)When this error come? 3)Why I am getting compilation error? MyApproach: import java.util.Scanner; class Prog1 { public static void main(String[] args) throws java.la

生命的宇宙和一切

我是CodeChef的新手,在CodeChef(在线编程平台)编辑器中出现以下错误,并且无法提交我的代码。 我想问一下 1)是我对待问题的方法吗? 2)当这个错误来了吗? 3)为什么我得到编译错误? MyApproach: import java.util.Scanner; class Prog1 { public static void main(String[] args) throws java.lang.Exception { int a = 0; Scanner sc = new Scanner(System. in ); int t = 1;

Exception in thread "main" java.util.NoSuchElementException Error

I am having trouble with the following assignment: "Write a program to accept any two dates in the form of month day year (8 23 2000), separated by spaces, and calculate the total number of days that has elapsed between the two dates, inclusive of the beginning and ending days. Remember that leap year is a year divisible by 4, except for centennial years, which must be divisible by 400, su

线程“main”中的异常java.util.NoSuchElementException错误

我在以下任务中遇到问题: “编写一个程序,以日月年(8 23 2000)的形式接受任意两个日期,用空格分隔,并计算两个日期之间的总天数,包括开始日期和结束日期。闰年是可以被4除尽的一年,除了百年以外,必须可以被400整除,比如1600或2000(1800不是闰年),你可以用任何输入的日期(或存储的日期在一个文件中),但最终必须运行下面显示的数据,屏幕上的系统输出是可以接受的。“ 到目前为止我有这个代码,它编译: import j