无聊试试各牛B语言: 求回文数

 1 #include<stdio.h>
 2 #include<stdlib.h>
 3 #include<time.h>
 4 
 5 bool ishuiwen(int n) {
 6     int sn = 0;
 7     sn = n;
 8     int tn = 0;
 9     while (sn != 0) {
10         tn = tn * 10 + sn % 10;
11         sn = sn / 10;
12     }
13     if (tn == n)
14         return true;
15     return false;
16 }
17 
18 int hw1() {
19     int tx = 0;
20     int x = 0;
21     for (x = 0; x <= 10000000; x++) {
22         if (ishuiwen(x) == true)
23             tx ++;
24     }
25     return tx;
26 }
27 
28 void runhw1() {
29     clock_t start, finish;
30     double  duration;
31     start = clock();
32     int total = hw1();
33     finish = clock();
34     duration = (double)(finish - start) / CLOCKS_PER_SEC;
35     printf("total = %d,  %f seconds\n", total, duration);
36 }
37 int main(){
38     runhw1();
39     return 0;
40 }

scroot@DESKTOP-SA2E7TL:/mnt/c/Users/whsse/ubuntu$ g++ t2.c
scroot@DESKTOP-SA2E7TL:/mnt/c/Users/whsse/ubuntu$ ./a.out
total = 10999,  0.484375 seconds
scroot@DESKTOP-SA2E7TL:/mnt/c/Users/whsse/ubuntu$ ./a.out
total = 10999,  0.437500 seconds
scroot@DESKTOP-SA2E7TL:/mnt/c/Users/whsse/ubuntu$ ./a.out
total = 10999,  0.437500 seconds
scroot@DESKTOP-SA2E7TL:/mnt/c/Users/whsse/ubuntu$ g++ -O3 t2.c
scroot@DESKTOP-SA2E7TL:/mnt/c/Users/whsse/ubuntu$ ./a.out
total = 10999,  0.156250 seconds
scroot@DESKTOP-SA2E7TL:/mnt/c/Users/whsse/ubuntu$ ./a.out
total = 10999,  0.156250 seconds
scroot@DESKTOP-SA2E7TL:/mnt/c/Users/whsse/ubuntu$ ./a.out
total = 10999,  0.140625 seconds

 1 package main
 2 
 3 import (
 4     "fmt"
 5     "time"
 6 )
 7 
 8 func HW(num int) bool {
 9     source, tnum := num, 0
10     for num != 0 {
11         tnum = tnum*10 + num%10
12         num = num / 10
13     }
14     return tnum == source
15 }
16 func hw() {
17     t1 := time.Now()
18     all, total := 10000000, 0
19     for n := 0; n <= all; n++ {
20         if HW(n) {
21             total++
22         }
23     }
24     fmt.Printf(`total:%d time:%f`, total, time.Now().Sub(t1).Seconds())
25 }
26 
27 func main() {
28     hw()
29 }

C:\Users\whsse\ubuntu>go build go_t.go
C:\Users\whsse\ubuntu>go_t.exe
total:10999 time:0.216019
C:\Users\whsse\ubuntu>go_t.exe
total:10999 time:0.217023
C:\Users\whsse\ubuntu>go_t.exe
total:10999 time:0.214510

 1 use "collections"
 2 use "time"
 3 
 4 actor Main
 5 new create(env: Env) =>
 6 
 7 var all:U32 = 10000000
 8 var total:U32 = 0
 9 
10 var t1 = Time.now()
11 for i in Range[U32](0, all) do
12     if hw(i) then total = total + 1 end
13 end
14 
15 var t2 = Time.now()
16 var t = Time.wall_to_nanos(t2) - Time.wall_to_nanos(t1)
17 
18 env.out.print(total.string())
19 env.out.print((t / 1000000).string())
20 
21 
22 fun hw(num: U32):Bool =>
23     var num‘ = num
24     var tnum:U32 = 0
25     while num‘ != 0 do
26         tnum = (tnum * 10) + (num‘ % 10)
27         num‘ = num‘ / 10
28     end
29     if tnum == num then return true /*else false*/ end
30     false

scroot@DESKTOP-SA2E7TL:/mnt/c/Users/whsse/ubuntu/pony_t$ ./pony_t
10999
143
scroot@DESKTOP-SA2E7TL:/mnt/c/Users/whsse/ubuntu/pony_t$ ./pony_t
10999
149
scroot@DESKTOP-SA2E7TL:/mnt/c/Users/whsse/ubuntu/pony_t$ ./pony_t
10999
128
scroot@DESKTOP-SA2E7TL:/mnt/c/Users/whsse/ubuntu/pony_t$ ./pony_t
10999
144