Question

在解析字符串期间，我想决定何时停止并从字符串中获取下一部分。我的主要目标是取字符串26个字符或更少字符的3个部分。在我看来，我的代码有点奇怪

data_directory = "../train-images/train-images.idx3-ubyte"
label_directory = "../train-labels/train-labels.idx1-ubyte"
data_x = npx.convert_from_file(data_directory)
labels = npx.convert_from_file(label_directory)
def dist(x1,x2):
    return np.sqrt(sum(x1-x2)**2)

def knn(training_data,label,queryPoint,k=5):

    vals = []
    m = training_data.shape[0]

    for i in range(m):
        d = dist(queryPoint,training_data[i])
        vals.append((d,label[i]))

    vals = sorted(vals)
    vals = vals[:k]
    vals = np.array(vals)
    new_vals = np.unique(vals[:,1],return_counts=True)
    index = new_vals[1].argmax() 
    predict = new_vals[0][index]
    return predict

pred  = knn(data_x,labels,data_x[0])
print(int(pred))

Answer 1

您应该可以使用Set：

var excludes = new HashSet<Char> { ' ', '-', ... };

然后使用以下命令测试您的角色是否在场景中

excludes.contains(someChar)

Set docs

有可能将字符串中的字符与一组字符进行比较吗？

1 个答案: