java - 如何查找一个数字是否在数组中？

Question

尝试编写一种方法来告诉我一个数字是否在数组中。到目前为止我有..

    public static boolean inList(double number, double[] list){
    for (double i : list)
        {
            if (i == number){
                return false;
        }

    }
    return true; //if its not in the array I want the if statement to run.
}

到目前为止，这对我没有用，出于某种原因，它无法识别数组中是否包含某些数字。

Answer 1

您混淆了 return 语句。应该是这样的:

    public static boolean inList(double number, double[] list){
        for (double i : list)
        {
            if (i == number){
                //return true when you've found the match!
                return true;
            }
        }
    //return false here because you finished looking at the entire array 
    //and couldn't find a match.
    return false;
}