Create 1863. Sum of All Subset XOR Totals (#483)

Author: Chayandas07

1863. Sum of All Subset XOR Totals

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+class Solution {
+public:
+    int subsetXORSum(vector<int>& a) {
+        int n = a.size();
+        int bitSize = 1 << n;
+        int res = 0;
+        for(int i=0;i<bitSize;i++) {
+            int curr = 0;
+            for(int j=0;j<n;j++) {
+                if(i & (1<<j)) {
+                    curr^=a[j];
+                }
+            }
+            res+=curr;
+        }
+        return res;
+    }
+};