diff --git a/src/senior/Lambda/Collection.kt b/src/senior/Lambda/Collection.kt
index 76d80e4..27becfa 100644
--- a/src/senior/Lambda/Collection.kt
+++ b/src/senior/Lambda/Collection.kt
@@ -30,4 +30,8 @@ fun main(args: Array<String>) {
     // 查找所有满足条件的元素
     println("element > 10 = ${list.filter { it >= 20 }}")
 
+    // 统计满足条件的元素个数
+    println("element num > 10 = ${list.count { it >= 20 }}")
+
+
 }
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