leetcode: add 1310

Author: Pankajcoder1

LeetCode/1310.XOR Queries of a Subarray.cpp

@@ -0,0 +1,34 @@
+/*
+    written by Pankaj Kumar.
+    country:-INDIA
+*/
+typedef long long ll ;
+const ll INF=1e18;
+const ll mod1=1e9+7;
+const ll mod2=998244353;
+//Add main code here
+
+class Solution
+{
+public:
+    vector<int> xorQueries(vector<int> &arr, vector<vector<int>> &queries)
+    {
+        vector<int> ans(queries.size());
+        int n=arr.size();
+        vector<int> pref_xor(n,arr[0]);
+        
+        for(int i=1;i<n;i++){
+            pref_xor[i]=pref_xor[i-1]^arr[i];
+        }
+        for(int i=0;i<queries.size();i++){
+            int a=queries[i][0], b=queries[i][1];
+            if(a==0){
+                ans[i]=pref_xor[b];
+            }
+            else{
+                ans[i]=pref_xor[b]^pref_xor[a-1];
+            }
+        }
+        return ans;
+    }
+};