Add build script for Go and update Go codes.

docs/chapter_computational_complexity/space_time_tradeoff.md

@@ -51,18 +51,7 @@ comments: true
 === "Go"
 
     ```go title="leetcode_two_sum.go"
-    func twoSumBruteForce(nums []int, target int) []int {
-        size := len(nums)
-        // 两层循环，时间复杂度 O(n^2)
-        for i := 0; i < size-1; i++ {
-            for j := i + 1; i < size; j++ {
-                if nums[i]+nums[j] == target {
-                    return []int{i, j}
-                }
-            }
-        }
-        return nil
-    }
+    [class]{}-[func]{twoSumBruteForce}
     ```
 
 === "JavaScript"
@@ -144,18 +133,7 @@ comments: true
 === "Go"
 
     ```go title="leetcode_two_sum.go"
-    func twoSumHashTable(nums []int, target int) []int {
-        // 辅助哈希表，空间复杂度 O(n)
-        hashTable := map[int]int{}
-        // 单层循环，时间复杂度 O(n)
-        for idx, val := range nums {
-            if preIdx, ok := hashTable[target-val]; ok {
-                return []int{preIdx, idx}
-            }
-            hashTable[val] = idx
-        }
-        return nil
-    }
+    [class]{}-[func]{twoSumHashTable}
     ```
 
 === "JavaScript"