How to replace elements in a 2D array in Java? Okay so for my program, I am trying to create a fish tank. My program is to generate 4 different FISH: ><))’> in a tank of tilde (~) characters. The tank is a 2D array of 8 rows and 32 columns so it would look like ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ for one of the eight rows (before I generate the random positions of the fish in the rank). Then one row could look like ~~~~~~~~~~><))’>~~~~~~~~~~~~~~~~ after I generate random positions for my fish. It should also hide characters of the fishes body if it is more to the left like such )’>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ where there is only three parts of the fish, 2 body characters and the head character.The random position coordinate I have generated for each of the four fishes starts on the head of the fish (>) which means I have been able to successfully generate four > in the tank, which looks like ~~~~~~~~~~~~~~~~>~~~~~~~~~~~~~~~ when ran. But my problem is how I can get the rest of the fishes body after the head. I know I am going to be working backwards from the > character and replace the tilde characters with characters from the fishes body. Some steps that would explain it and some suggestions would be nice. I am just getting back into basic coding so a good explanation would be VERY HELPFUL since some “experts” on Chegg don’t always see through the student’s eyes. Here is some of the code below.
import java.util.Random;
public class Main {
public static void main(String[] args) {
char [][] tilde = new char [8][32];
fillTank(tilde, ‘~’);
int fish [][] = generateRandomPositions(4, 8, 32);
for (int i = 0; i < fish.length; ++i) {
placeFishInTank(tilde, fish[i][0], fish[i][1]);
}
renderTank(tilde);
}
/**
* Copies the water character into every position in the tank array. The two-dimensional tank
* array can have dimensions of any size(s).
*
* @param tank will contain all water characters after this method is called.
* @param water is the character copied into the tank.
*/
public static void fillTank(char[][] tank, char water)
{
for (int row = 0; row < tank.length; ++row) {
for (int column = 0; column < tank[row].length; ++column) {
tank [row][column] = ‘~’;
}
System.out.println();
}
}
public static void placeFishInTank(char [][] positionInTank, int x, int y)
{
positionInTank[x][y] = ‘>’;
//THE REST IS POTENTIAL IDEAS OF HOW I WAS THINKING TO DO THIS.
//FIRST THOUGHTS
// fish [] = {>,<, ), ), ‘, >};
// for (int i = 0; i < positionInTank.length; i++) {
// for (int j = 0; i < positionInTank[x].length; j++)
// if (positionInTank[][] >= 0) {
// String.charAt(i, j);
// }
// }
//MY SECOND THOUGHT
//if (!positionInTank[row].length – 1 = 0) {
//add on next character ”’
// }
//if (!positionInTank[row] – 2 = 0) {
//add on next character ‘)’
// }
//if (!positionInTank[row] – 3 = 0) {
//add on next character ‘)’
// }
//if (!positionInTank[row] – 4 = 0) {
//add on next character ‘<‘
// }
//if (!positionInTank[row] – 5 = 0) {
//add on next character ‘>’
// }
}
