1. Add C++ codes for the chapter of

computational complexity, sorting, searching.
2. Corrected some mistakes.
3. Update README.

codes/go/chapter_computational_complexity/leetcode_two_sum_test.go

@@ -16,9 +16,8 @@ func TestTwoSum(t *testing.T) {
 	// ====== Driver Code ======
 	// 方法一：暴力解法
 	res := twoSumBruteForce(nums, target)
-	t.Log("brute force:", res)
-
+	t.Log("方法一 res =", res)
 	// 方法二：哈希表
 	res = twoSumHashTable(nums, target)
-	t.Log("hash table:", res)
+	t.Log("方法二 res =", res)
 }