【发布时间】：2015-02-04 20:27:19
【问题描述】：
所以我正在编写一个带有 2D 数组的代码，将其排列成一个 10 x 10 的方桌。它充满了 Xs 和 Os 以及空白。输入一个阈值，如果 X 或 O 周围的索引百分比也是 Xs 或 Os 大于阈值，则该点满足，否则不满足。
然后我必须将不满意的Xs和Os移动到一个空白点并重复直到整个板子都满意或超过指定的轮数。我写了整件事，但是当我尝试调用 moveAllUnsatisfied 时，我得到 254: error missing return statement。
我以为我可以调用 moveAllUnsatisfied 并且它会改变我的数组。我必须返回什么？或者这是完全错误的，我应该以及我应该如何重做？
对于这段代码的冗长和丑陋，我深表歉意，我知道它可能会做得更好
public class CellSim{
public static void main(String[] args){
System.out.println("what is the size of your grid?");
char [][] tissue = new char [IO.readInt()][IO.readInt()];
System.out.println("How many like agents are needed to be satisfied?");
int threshold = IO.readInt();
System.out.println("How many rounds to try and satisfy the board?");
int maxRounds = IO.readInt();
System.out.println("How often do you want to see the board?");
int frequency = IO.readInt();
System.out.println("Percentage of X cells?");
int xCells = IO.readInt();
System.out.println("Percentage of blank cells?");
int bCells = IO.readInt();
int roundsDone = 0;
assignCellTypes(tissue, bCells, xCells);
printTissue(tissue);
System.out.println();
boolean boardSat = true;
boardSat = boardSatisfied(tissue, threshold);
if( boardSat == false){
while(roundsDone <= maxRounds || boardSat == false){
moveAllUnsatisfied(tissue, threshold);
roundsDone++;
boardSat = boardSatisfied(tissue, threshold);
while(roundsDone == frequency || roundsDone == frequency * 2){
System.out.println();
printTissue(tissue);
frequency = frequency * 2;
}
}
}
if( boardSat == true){
printTissue(tissue);}
}
public static void printTissue(char[][] tissue){
for(int row = 0;row < tissue.length;row++){
for(int col = 0;col < tissue[row].length;col++){
System.out.print(tissue[row][col] + "\t");
}
System.out.println();
}
}
public static void assignCellTypes(char[][] tissue, int percentBlank, int percentX){
int n = (tissue.length) * (tissue.length);
percentBlank = (int) Math.ceil(n * (percentBlank * .01));
percentX = (int) Math.ceil((n - percentBlank) * (percentX * .01));
int percentO = (int) Math.ceil(n - percentBlank - percentX);
for( int i = 0; i < percentBlank; i++){
while(percentBlank > 0){
int randCell = randInt(0, 9);
int randCell2 = randInt(0, 9);
if(tissue[randCell][randCell2] == '\u0000'){
tissue[randCell][randCell2] = ' ';
break;
}
}
}
for( int i = 0; i < percentX; i++){
while(percentX > 0){
int randCell = randInt(0, 9);
int randCell2 = randInt(0, 9);
if(tissue[randCell][randCell2] == '\u0000'){
tissue[randCell][randCell2] = 'X';
break;
}
}
}
for( int i = 0; i < percentO; i++){
while(percentO > 0){
int randCell = randInt(0, 9);
int randCell2 = randInt(0, 9);
if(tissue[randCell][randCell2] == '\u0000'){
tissue[randCell][randCell2] = 'O';
break;
}
}
}
}
public static boolean isSatisfied(char[][] tissue, int row, int col, int threshold){
int total = 0;
int same = 0;
if(tissue[row][col] == 'X'){
total = 0;
if(col-1 >= 0 && row+1 < tissue.length && tissue[row + 1][col - 1] == 'X'){
same ++;
total ++;
}else if(col-1 >= 0 && row+1 < tissue.length && tissue[row + 1][col - 1] == 'O')
total ++;
if(row+1 < tissue.length && tissue[row + 1][col] == 'X'){
same ++;
total ++;
}else if(row+1 < tissue.length && tissue[row + 1][col] == 'O')
total ++;
if(row+1 < tissue.length && col+1 < tissue[row+1].length && tissue[row + 1][col + 1] == 'X'){
same ++;
total ++;
}else if(row+1 < tissue.length && col+1 < tissue[row+1].length && tissue[row + 1][col + 1] == 'O')
total ++;
if(col-1 >= 0 && tissue[row][col - 1] == 'X'){
same ++;
total ++;
}else if(col-1 >= 0 && tissue[row][col - 1] == 'O')
total ++;
if(col+1 < tissue[row].length && tissue[row][col + 1] == 'X'){
same ++;
total ++;
}else if(col+1 < tissue[row].length && tissue[row][col + 1] == 'O')
total ++;
if(row-1 >= 0 && col-1 >= 0 && tissue[row - 1][col - 1] == 'X'){
same ++;
total ++;
}else if(row-1 >= 0 && col-1 >= 0 && tissue[row - 1][col - 1] == 'O')
total ++;
if(row-1 >= 0 && tissue[row - 1][col] == 'X'){
same ++;
total ++;
}else if(row-1 >= 0 && tissue[row - 1][col] == 'O')
total ++;
if(row-1 >= 0 && col+1 < tissue[row-1].length && tissue[row - 1][col + 1] == 'X'){
same ++;
total ++;
}else if(row-1 >= 0 && col+1 < tissue[row-1].length && tissue[row - 1][col + 1] == 'O')
total ++;
}
if(tissue[row][col] == 'O'){
total = 0;
if(col-1 >= 0 && row+1 < tissue.length && tissue[row + 1][col - 1] == 'O'){
same ++;
total ++;
}else if(col-1 >= 0 && row+1 < tissue.length && tissue[row + 1][col - 1] == 'X')
total ++;
if(row+1 < tissue.length && tissue[row + 1][col] == 'O'){
same ++;
total ++;
}else if(row+1 < tissue.length && tissue[row + 1][col] == 'X')
total ++;
if(row+1 < tissue.length && col+1 < tissue[row+1].length && tissue[row + 1][col + 1] == 'O'){
same ++;
total ++;
}else if(row+1 < tissue.length && col+1 < tissue[row+1].length && tissue[row + 1][col + 1] == 'X')
total ++;
if(col-1 >= 0 && tissue[row][col - 1] == 'O'){
same ++;
total ++;
}else if(col-1 >= 0 && tissue[row][col - 1] == 'X')
total ++;
if(col+1 < tissue[row].length && tissue[row][col + 1] == 'O'){
same ++;
total ++;
}else if(col+1 < tissue[row].length && tissue[row][col + 1] == 'X')
total ++;
if(row-1 >= 0 && col-1 >= 0 && tissue[row - 1][col - 1] == 'O'){
same ++;
total ++;
}else if(row-1 >= 0 && col-1 >= 0 && tissue[row - 1][col - 1] == 'X')
total ++;
if(row-1 >= 0 && tissue[row - 1][col] == 'O'){
same ++;
total ++;
}else if(row-1 >= 0 && tissue[row - 1][col] == 'X')
total ++;
if(row-1 >= 0 && col+1 < tissue[row-1].length && tissue[row - 1][col + 1] == 'O'){
same ++;
total ++;
}else if(row-1 >= 0 && col+1 < tissue[row-1].length && tissue[row - 1][col + 1] == 'X')
total ++;
}
if(tissue[row][col] == ' '){
return true;
}if(total == 0){
return false;
}else if(((same / total) * 100) >= threshold){
return true;
}else{ return false;}
}
public static boolean boardSatisfied(char[][] tissue, int threshold){
boolean isSat = false;
boolean bSat = true;
for(int row = 0;row < tissue.length;row++){
for(int col = 0;col < tissue[row].length;col++){
if(tissue[row][col] == 'X'){
isSat = isSatisfied(tissue, row, col, threshold);
if(isSat == false){
tissue[row][col] = 'U';
bSat = false;
}
}
if(tissue[row][col] == 'O'){
isSat = isSatisfied(tissue, row, col, threshold);
if(isSat == false){
tissue[row][col] = 'Q';
bSat = false;
}
}
}
}
if(bSat == false){
return false;
}else{return true;}
}
public static int moveAllUnsatisfied(char[][] tissue, int threshold){
for(int row = 0;row < tissue.length;row++){
for(int col = 0;col < tissue[row].length;col++){
if(tissue[row][col] == 'U'){
tissue[row][col]= ' ';
int ranCell = randInt(0, 9);
int ranCell2 = randInt(0, 9);
while(tissue[ranCell][ranCell2] == 'X' || tissue[ranCell][ranCell2] == 'O' || tissue[ranCell][ranCell2] == ' '){
ranCell = randInt(0, 9);
ranCell2 = randInt(0, 9);
if(tissue[ranCell][ranCell2] == ' '){
tissue[ranCell][ranCell2] = 'X';
break;
}
}
}
if(tissue[row][col] == 'Q'){
tissue[row][col]= ' ';
int ranCell = randInt(0, 9);
int ranCell2 = randInt(0, 9);
while(tissue[ranCell][ranCell2] == 'X' || tissue[ranCell][ranCell2] == 'O' || tissue[ranCell][ranCell2] == ' '){
ranCell = randInt(0, 9);
ranCell2 = randInt(0, 9);
if(tissue[ranCell][ranCell2] == ' '){
tissue[ranCell][ranCell2] = 'X';
break;
}
}
}
}
}
}
public static int randInt(int min, int max){
int range = (max - min) + 1;
return(int)(Math.random() * range) + min;
}
}
【问题讨论】：
标签： java arrays int return subroutine