feat(Go-Tool)：新增二分法查找算法及其单测、插入查询及其单测、lomuto划分查询第k小元素及其单测、归并排序及其单测、快速排序及其单测.

util/search/BinarySearch.go

@@ -0,0 +1,28 @@
+/*
+ *  @Author : huangzj
+ *  @Time : 2020/8/18 17:45
+ *  @Description：二分查找法，对于有序数组进行查找
+ */
+
+package search
+
+func BinarySearch(list []int, value int) int {
+	low := 0
+	high := len(list) - 1
+	var mid int
+
+	for low <= high {
+		mid = (low + high) >> 1 //相当于(low + high) / 2
+		if value == list[mid] {
+			return mid
+		}
+
+		if value < list[mid] {
+			high = mid - 1
+		} else {
+			low = mid + 1
+		}
+	}
+
+	return -1
+}