I am trying to convert this 2d char array to a String. The issue is it is outputting 100,000 characters even through the input array is no where near that. What is the correct way to convert a 2d char array to a string?
public String printMaze(char[][] maze) {
String s= "";
for(int i=0;i<maze.length;i++){
for(int j=0; i<maze[i].length;j++){
s= maze.toString();;
}
}
return s;
}
Your inner loop has a problem and also I don't see you actually concetanting a string from the 2D character array. Here is the problem with the inner loop:
for (int j=0; i < maze[i].length; j++) {
// ^^^^ this will always be true for certain values of i
// it should be j < maze[i].length
s= maze.toString();;
}
In other words, your inner loop might be spinning forever, depending on the bounds of the maze. Instead, try the following code:
public String printMaze(char[][] maze) {
String s = "";
for (int i=0; i < maze.length; i++) {
for (int j=0; j < maze[i].length; j++) {
s += maze[i][j];
}
// uncomment next line if you want the maze to have rows
// s += "\n";
}
return s.toString();
}
But as @ElliottFrisch mentioned, you could just return Arrays.deepToString(maze).
StringBuilder ? It is a java.lang class
Hope this will help..
public String printMaze(char[][] maze) {
String s= "";
for(int i=0;i < maze.length;i++){
for(int j=0; j < maze[i].length;j++){
s = s + maze[i][j];
}
}
return s;
}
maze.toString(), how do you want to join the characters? Because you could doreturn Arrays.deepToString(maze);