new files

Task/Balanced-brackets/Go/balanced-brackets.go

@@ -0,0 +1,55 @@
+package main
+
+import (
+    "bytes"
+    "fmt"
+    "math/rand"
+    "time"
+)
+
+func init() {
+    rand.Seed(time.Now().UnixNano())
+}
+
+func generate(n uint) string {
+    a := bytes.Repeat([]byte("[]"), int(n))
+    for i := len(a) - 1; i >= 1; i-- {
+        j := rand.Intn(i + 1)
+        a[i], a[j] = a[j], a[i]
+    }
+    return string(a)
+}
+
+func testBalanced(s string) {
+    fmt.Printf("%s: ", s)
+    var open int
+    for i := 0; i < len(s); i++ {
+        switch s[i] {
+        case '[':
+            open++
+        case ']':
+            if open == 0 {
+                fmt.Println("not ok")
+                return
+
+            }
+            open--
+        default:
+            fmt.Println("not ok")
+            return
+        }
+    }
+    if open == 0 {
+        fmt.Println("ok")
+    } else {
+        fmt.Println("not ok")
+    }
+}
+
+func main() {
+    rand.Seed(time.Now().UnixNano())
+    for i := uint(0); i < 10; i++ {
+        testBalanced(generate(i))
+    }
+    testBalanced("()")
+}