2015年7月22日 星期三

Java 練習(13)：三維陣列2

Java 7 教學手冊第五版 第六章習題

13.有一三維陣列，表示R、G、B
{{{18, 172, 127}, {89, 133, 136}, {175, 8, 43}},
{{234, 224, 113}, {128, 151, 40}, {34, 48, 75}},
{{141, 28, 192}, {127, 40, 234}, {131, 228, 98}}}

(a)請以一個三維陣列顯示
(b)將畫素中的r值加30，若加30後的值超過255，則以255取代之
(c)將畫素中的g值減30，若減30後的值小於0，則以0取代之


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public class app6 {

    int array[][][] = {{{18, 172, 127}, {89, 133, 136}, {175, 8, 43}}, {{234, 224, 113}, {128, 151, 40}, {34, 48, 75}}, {{141, 28, 192}, {127, 40, 234}, {131, 228, 98}}};

    public static void main(String[] args) {
        app6 app = new app6();
        app.print();
        System.out.println("--------------------");
        app.addr();
        System.out.println("--------------------");
        app.addg();
    }

    private void print() {
        for (int i = 0; i < array.length; i++) {
            System.out.print("{");
            for (int j = 0; j < array[i].length; j++) {
                System.out.print("{");
                for (int k = 0; k < array[i][j].length; k++) {
                    System.out.print(array[i][j][k] + ",");
                }
                System.out.print("\b}");
            }
            System.out.print("},\n");
        }
    }

    private void addr() {
        int sum[] = {0, 0, 0};
        for (int i = 0; i < array.length; i++) {
            System.out.print("{");
            for (int j = 0; j < array[i].length; j++) {
                System.out.print("{");
                for (int k = 0; k < array[i][j].length; k++) {
                    sum[k] = array[i][j][k];
                    if (k == 0) { //r的值要+30
                        sum[0] = array[i][j][k] + 30;
                        if (sum[0] > 255) {
                            sum[0] = 255;
                        }
                    }
                    System.out.print(sum[k] + ",");
                }
                System.out.print("\b}");
            }
            System.out.print("},\n");
        }
    }
    
     private void addg() {
        int sum[] = {0, 0, 0};
        for (int i = 0; i < array.length; i++) {
            System.out.print("{");
            for (int j = 0; j < array[i].length; j++) {
                System.out.print("{");
                for (int k = 0; k < array[i][j].length; k++) {
                    sum[k] = array[i][j][k];
                    if (k == 1) { 
                        sum[1] = array[i][j][k] - 30;
                        if (sum[1] <0) {
                            sum[1] =0;
                        }
                    }
                    System.out.print(sum[k] + ",");
                }
                System.out.print("\b}");
            }
            System.out.print("},\n");
        }
    }
}
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