go: add «1310. XOR Queries of a Subarray»

Signed-off-by: Matej Focko <me@mfocko.xyz>

go/xor-queries-of-a-subarray.go

@@ -0,0 +1,23 @@
+package main
+
+func xorQueries(arr []int, queries [][]int) []int {
+	result := make([]int, len(queries))
+
+	// Prefix XOR
+	for i := 1; i < len(arr); i++ {
+		arr[i] ^= arr[i-1]
+	}
+
+	// Evaluate queries
+	for i, query := range queries {
+		l, r := query[0], query[1]
+
+		if l > 0 {
+			result[i] = arr[l-1] ^ arr[r]
+		} else {
+			result[i] = arr[r]
+		}
+	}
+
+	return result
+}