add sol

leetcode/1287.ElementAppearingMoreThan25percentInSortedArray/elementAppearingMoreThan25percentInSortedArray.go

@@ -0,0 +1,38 @@
+package main
+
+import (
+	"fmt"
+)
+
+func findSpecialInteger(arr []int) int {
+	for k, v := range arr {
+		if v == arr[k+(len(arr)>>2)] {
+			return v
+		}
+	}
+	return 0
+}
+
+func findSpecialInteger1(arr []int) int {
+	if len(arr) < 4 {
+		return arr[0]
+	}
+	count := 1
+	for i := 1; i < len(arr); i++ {
+		if arr[i] == arr[i-1] {
+			count++
+			if count > len(arr)/4 {
+				return arr[i]
+			}
+		} else {
+			count = 1
+		}
+
+	}
+	return -1
+}
+
+func main() {
+	arr := []int{1, 1, 1, 1, 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 12, 12, 12}
+	fmt.Println(findSpecialInteger1(arr))
+}