Add soulution.go for 0007.Reverse Integer

Author: Yeqi Tao

solution/0007.Reverse Integer/Solution.go

@@ -0,0 +1,23 @@
+func reverse(x int) int {
+	slot := make([]int, 11)
+	count := 0
+	for x != 0 {
+		n := x%10
+		slot[count] = n
+		count++
+		x /= 10
+	}
+	result := 0
+	flag := true
+    for i := 0; i < count; i++ {
+		if flag && slot[i] == 0 {
+			continue
+		}
+		flag = false
+		result = 10 * result + slot[i]
+	}
+    if result > math.MaxInt32 || result < math.MinInt32 {
+		return 0
+	}
+	return result
+}

solution/README.md

@@ -47,6 +47,7 @@
 ├── 0007.Reverse Integer
 │   ├── README.md
 │   ├── Solution.java
+│   ├── Solution.go
 │   ├── Solution.js
 │   ├── Solution.py
 │   ├── Solution.rb