From 8cb8552d41fffad8573f2fc7beceb236fc9fb59e Mon Sep 17 00:00:00 2001
From: chayan das <110921638+Chayandas07@users.noreply.github.com>
Date: Thu, 16 Jan 2025 22:39:38 +0530
Subject: [PATCH] Create 2425. Bitwise XOR of All Pairings

---
 2425. Bitwise XOR of All Pairings | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100644 2425. Bitwise XOR of All Pairings

diff --git a/2425. Bitwise XOR of All Pairings b/2425. Bitwise XOR of All Pairings
new file mode 100644
index 0000000..8849748
--- /dev/null
+++ b/2425. Bitwise XOR of All Pairings	
@@ -0,0 +1,14 @@
+class Solution {
+public:
+    int xorAllNums(vector<int>& nums1, vector<int>& nums2) {
+        int n1=nums1.size(), n2=nums2.size();
+        unordered_map<int,long>freq;
+        for(int n:nums1) freq[n]+=n2;
+        for(int n:nums2) freq[n]+=n1;
+        int res=0;
+        for(auto& [n,c]:freq){
+            if(c%2==1) res^=n;
+        }
+        return res;
+    }
+};