92 lines
1.4 KiB
Go
92 lines
1.4 KiB
Go
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"strconv"
|
|
"strings"
|
|
)
|
|
|
|
//type Test interface {
|
|
//}
|
|
//
|
|
//func condTest(cond *sync.Cond) {
|
|
// cond.L.Lock()
|
|
// cond.Wait()
|
|
// fmt.Println("condTest")
|
|
// cond.L.Unlock()
|
|
//}
|
|
//func chanTest(ch chan<- *Test) {
|
|
//
|
|
//}
|
|
|
|
func reverse(x int) int {
|
|
neg := false
|
|
if x < 0 {
|
|
neg = true
|
|
x = -x
|
|
}
|
|
s := fmt.Sprintf("%d", x)
|
|
var sb strings.Builder
|
|
for i := len(s) - 1; i >= 0; i-- {
|
|
sb.WriteByte(s[i])
|
|
}
|
|
s = sb.String()
|
|
var ans int32 = 0
|
|
for c := range s {
|
|
t, _ := strconv.ParseUint(string(s[c]), 10, 16)
|
|
ans = ans*10 + int32(t)
|
|
}
|
|
if neg {
|
|
ans = -ans
|
|
x = -x
|
|
}
|
|
s1, s2 := fmt.Sprintf("%d", x), fmt.Sprintf("%d", ans)
|
|
if neg {
|
|
s1 = s1[1:]
|
|
s2 = s2[1:]
|
|
}
|
|
if len(s1) != len(s2) {
|
|
for len(s2) < len(s1) {
|
|
s2 = "0" + s2
|
|
}
|
|
}
|
|
for i := 0; i < len(s1); i++ {
|
|
if s1[i] != s2[len(s2)-1-i] {
|
|
return 0
|
|
}
|
|
}
|
|
return int(ans)
|
|
}
|
|
|
|
//9646324351
|
|
//2147483648
|
|
|
|
func main() {
|
|
fmt.Println(reverse(1534236469))
|
|
//var x int = 16
|
|
//var y any = x
|
|
//if _, ok := y.(int); ok {
|
|
// fmt.Println(x)
|
|
//}
|
|
//if _, ok := y.(int32); ok {
|
|
// fmt.Println(x)
|
|
//}
|
|
//var mu sync.Mutex
|
|
//sync.NewCond(&mu)
|
|
//make(chan *Test, 6)
|
|
//var wg sync.WaitGroup
|
|
//wg.Add(1)
|
|
//wg.Done()
|
|
//var mu sync.Mutex
|
|
//cond := sync.NewCond(&mu)
|
|
//
|
|
//go condTest(cond)
|
|
//go condTest(cond)
|
|
//
|
|
//time.Sleep(time.Second * 2)
|
|
//cond.L.Lock()
|
|
//cond.Broadcast()
|
|
//cond.L.Unlock()
|
|
//time.Sleep(time.Second * 2)
|
|
}
|