哪一个是线性和二元搜索的效率

Question

public enum Color {
    Red, Orange, Yellow, Green, Cyan, Blue, Purple;


    private boolean isRGB(Color color)
    {


    boolean b;

    switch(color){
        case Red:
            System.out.println("Monday is a work day!!");
            break;
        case Orange:
            System.out.println("Tusday is a work day!!");
        case Yellow:
            System.out.println("Wednesday is a work day!!");
        case Green:
            System.out.println("Thursday is a work day!!");
        case Cyan:
            System.out.println("Friday is a work day!!");   
        default:   b = false;

        System.out.println("Sorry this is not a working day!!\nn");
        System.out.println("It's weekend!!!");
    }
    return(b);
}

这是我自己尝试的代码。 我在返回（b）中有一个错误，说'b'没有初始化....请帮助。

Answer 1

替换

boolean b;

与

boolean b = true;

Answer 2

public enum Color{//...... - 老师添加了点，但没有要求添加。

public enum Color {
    Red, Orange, Yellow, Green, Cyan, Blue, Purple;    
}

private boolean isRGB(Color color) {

    boolean b = false;

    switch (color) {// i supposed to fill the blank switch(        )
        //And also i supposed write  all the statements for switch, thats all was required me to do!!
        case Red:
            System.out.println("Monday is a work day!!");
            break;
        case Orange:
            System.out.println("Tusday is a work day!!");
            break;
        case Yellow:
            System.out.println("Wednesday is a work day!!");
            break;
        case Green:
            System.out.println("Thursday is a work day!!");
            break;
        case Cyan:
            System.out.println("Friday is a work day!!");
            break;

        default:
            b = false;

            System.out.println("Sorry this is not a working day!!\nn");
            System.out.println("It's weekend!!!");

    }
    return (b);
}