(4a) Add Noise

    public int[][] addNoise(int[][] data, double percent){
        double random;
        int color;
        int[][] noiseImage = data;

        for (int y=0;y
            for(int x=0;x
                random = generator.nextDouble() - 0.5; //256*(percent/100)
                random *= 256*(percent/100);
                color = noiseImage[x][y];
                if (color + (int)random > 256){
                    color -= (int) random;
                    noiseImage[x][y] = color;
                    inputSourceImage.setRGB(x,y,color);
                }
                else if (color + (int)random < 0){
                    color -= (int)random;
                    noiseImage[x][y] = color;
                    inputSourceImage.setRGB(x,y,color);
                }
                else{
                    color += (int)random;
                    noiseImage[x][y] = color;
                    inputSourceImage.setRGB(x, y, color);
                }
            }
        }
        return noiseImage;
    }

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