diff --git a/function.py b/function.py
index 9611daf..85383ab 100644
--- a/function.py
+++ b/function.py
@@ -53,6 +53,18 @@ def classify0(inX, dataSet, labels, k=0):
     Returns:
     - int: 预测的分类标签。
     """
+    dataSetSize=dataSet.shape[0]
+    diffMat=inX - dataset
+    sqDiffMat=diffMat**2
+    sqDistances=sqDiffMat.sum(axis=1)
+    distance=sqDistances**0.5
+    sortedDistIndicies=distances.argsort()
+    classCount={}
+    for i in range(k):
+        votellabel=labels[sortedDistIndicies[i]]
+        classCount[votellabel]=classCount.get(votellabel,0)+1
+    sortedClassCount=sorted(classCount.items(),key=operator.itemgetter(1),reverser=True)
+    return sortedClassCount[0][0]
 
 
 def load_data(file_path):