diff --git a/src/assets/js/algorithm/sort.js b/src/assets/js/algorithm/sort.js
index 8f68d87..6e81fbb 100644
--- a/src/assets/js/algorithm/sort.js
+++ b/src/assets/js/algorithm/sort.js
@@ -473,6 +473,7 @@ class CountingSort extends Sort {
         return {
             name: "计数排序算法",
             enName: "Counting Sort",
+            available: true
         }
     }
 
@@ -488,8 +489,37 @@ class CountingSort extends Sort {
     sort(array) {
         if (array.length == 0)
             return array
-        // todo
-        console.log("尚未实现")
+
+        // 下面这个算法有问题
+
+        console.log("array: ", array)
+        // 检查 array 是否符合要求
+        if (array.some(item => typeof item !== 'number')) {
+            console.error("数组中的元素必须是数字")
+            return
+        } else if (array.some(item => item < 0)) {
+            console.error("数组中的元素必须是非负数")
+            return
+        } else if (array.some(item => item % 1 !== 0)) {
+            console.error("数组中的元素必须是整数")
+            return
+        }
+
+        let maxValue = Math.max(...array)
+        console.log(maxValue)
+        let count = new Array(maxValue).fill(0);
+        for (let i = 0; i < array.length; i++) {
+            count[array[i]]++
+        }
+
+        let index = 0
+        for (let i = 0; i < count.length; i++) {
+            while (count[i] > 0) {
+                array[index++] = i
+                count[i]--
+            }
+        }
+
         return array
     }
 
diff --git a/src/assets/js/algorithm/test.js b/src/assets/js/algorithm/test.js
index d1e9b7e..76341f1 100644
--- a/src/assets/js/algorithm/test.js
+++ b/src/assets/js/algorithm/test.js
@@ -42,6 +42,7 @@ var sortAlgorithm = {
     selectionSort: new SelectionSort(animation),
     insertionSort: new InsertionSort(animation),
     randomQuickSort: new RandomQuickSort(animation),
+    countingSort: new CountingSort(animation),
 }
 
 // 遍历每一种算法