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