add sol

leetcode/daily/2425/sol.go

@@ -0,0 +1,56 @@
+// https://leetcode.com/problems/bitwise-xor-of-all-pairings/description/
+
+package main
+
+import "fmt"
+
+// TLE
+func xorAllNums(nums1 []int, nums2 []int) int {
+	n := len(nums1)
+	m := len(nums2)
+
+	res := 0
+
+	for i := 0; i < n; i++ {
+		for j := 0; j < m; j++ {
+			res ^= nums1[i] ^ nums2[j]
+		}
+	}
+
+	return res
+}
+
+func xorAllNums1(nums1 []int, nums2 []int) int {
+	n := len(nums1)
+	m := len(nums2)
+
+	xor1, xor2 := 0, 0
+
+	for i := 0; i < n; i++ {
+		xor1 ^= nums1[i]
+	}
+
+	for i := 0; i < m; i++ {
+		xor2 ^= nums2[i]
+	}
+
+	if n%2 == 0 && m%2 == 0 {
+		return 0
+	} else if n%2 == 0 {
+		return xor1
+	} else if m%2 == 0 {
+		return xor2
+	} else {
+		return xor1 ^ xor2
+	}
+}
+
+func main() {
+	nums1 := []int{1, 2}
+	nums2 := []int{3, 4}
+
+	// nums1 := []int{2, 1, 3}
+	// nums2 := []int{10, 2, 5, 0}
+
+	fmt.Println(xorAllNums1(nums1, nums2))
+}