Add other solution for find pick along the array

findPeak.go

@@ -0,0 +1,33 @@
+package main
+
+import "fmt"
+
+// FindPeak finds the peak element in the array
+func findPeak(arr []int) int {
+	n := len(arr)
+
+	// first or last element is peak element
+	if n == 1 {
+		return 0
+	}
+	if arr[0] >= arr[1] {
+		return 0
+	}
+	if arr[n-1] >= arr[n-2] {
+		return n - 1
+	}
+
+	// check for ever other element
+	for i := 1; i < n-1; i++ {
+		// check if the neighbors are smaller
+		if arr[i] >= arr[i-1] && arr[i] >= arr[i+1] {
+			return i
+		}
+	}
+	return -1 // inficating no peak found
+}
+
+func main() {
+	arr := []int{1, 3, 20, 4, 1, 21, 0}
+	fmt.Println("Index of a peak point is", findPeak(arr))
+}