add new solutions

solutions/30/q3005/solution.go

@@ -0,0 +1,27 @@
+package q3005
+
+import "slices"
+
+func maxFrequencyElements(nums []int) int {
+	slices.Sort(nums)
+	maxFreq := 0
+	nMaxFreq := 0
+
+	freq := 1
+	for i := 1; i <= len(nums); i++ {
+		if i < len(nums) && nums[i] == nums[i-1] {
+			freq++
+		} else {
+			if freq > maxFreq {
+				maxFreq = freq
+				nMaxFreq = 1
+			} else if freq == maxFreq {
+				nMaxFreq++
+			}
+			freq = 1
+		}
+	}
+	return maxFreq * nMaxFreq
+}
+
+var _ = maxFrequencyElements