From 758a1a559cdb3361d880f5ea4c831b17992fc2e4 Mon Sep 17 00:00:00 2001
From: XuJiexian <3445002374@qq.com>
Date: Mon, 25 May 2026 11:14:45 +0800
Subject: [PATCH] =?UTF-8?q?=E4=B8=8A=E4=BC=A0=E6=96=87=E4=BB=B6=E8=87=B3?=
 =?UTF-8?q?=20'w8'?=
MIME-Version: 1.0
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Content-Transfer-Encoding: 8bit

---
 w8/Pair.java | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 w8/Pair.java

diff --git a/w8/Pair.java b/w8/Pair.java
new file mode 100644
index 0000000..97dd098
--- /dev/null
+++ b/w8/Pair.java
@@ -0,0 +1,42 @@
+public class Pair<K, V> {
+    private K key;
+    private V value;
+
+    public Pair(K key, V value) {
+        this.key = key;
+        this.value = value;
+    }
+
+    public K getKey() {
+        return key;
+    }
+
+    public V getValue() {
+        return value;
+    }
+
+    public void setKey(K key) {
+        this.key = key;
+    }
+
+    public void setValue(V value) {
+        this.value = value;
+    }
+
+    public static <K, V> Pair<V, K> swap(Pair<K, V> pair) {
+        return new Pair<>(pair.getValue(), pair.getKey());
+    }
+
+    @Override
+    public String toString() {
+        return "Pair{" + "key=" + key + ", value=" + value + '}';
+    }
+
+    public static void main(String[] args) {
+        Pair<String, Integer> original = new Pair<>("age", 25);
+        System.out.println("Original: " + original);
+        
+        Pair<Integer, String> swapped = Pair.swap(original);
+        System.out.println("Swapped: " + swapped);
+    }
+}
\ No newline at end of file