オフラインどう書く14回参考問題をGoで解いてみた ref: http://qiita.com/alucky0707/items/186e2954b3cd67b277b6

crossing.go

package main

import (
    "fmt"
    "strconv"
)

func test(input, except_ string) {
    actual := 0
    except, _ := strconv.Atoi(except_)

    for i1, c1 := range input {
        for i2, c2 := range input[i1+1:] {
            for i3, c3 := range input[i1+i2+2:] {
                for _, c4 := range input[i1+i2+i3+3:] {
                    if c1 == c3 && c2 == c4  {
                        actual += 1
                    }
                }
            }
        }
    }

    fmt.Printf("%d == %d => %t\n", except, actual, except == actual)
}

func main() {
/*0*/ test( "aabbca1bcb", "14" );    
/*1*/ test( "111ZZZ", "0" );    
/*2*/ test( "v", "0" );    
/*3*/ test( "ww", "0" );    
/*4*/ test( "xxx", "0" );    
/*5*/ test( "yyyy", "1" );    
/*6*/ test( "zzzzz", "5" );    
/*7*/ test( "abcdef", "0" );    
/*8*/ test( "abcaef", "0" );    
/*9*/ test( "abbaee", "0" );    
/*10*/ test( "abcacb", "2" );    
/*11*/ test( "abcabc", "3" );    
/*12*/ test( "abcdabcd", "6" );    
/*13*/ test( "abcadeabcade", "23" );    
/*14*/ test( "abcdeedcba", "0" );    
/*15*/ test( "abcdeaedcba", "8" );    
/*16*/ test( "abcdeaedcbad", "16" );    
/*17*/ test( "QQQQXXXX", "2" );    
/*18*/ test( "QwQQmQXmXXwX", "14" );    
/*19*/ test( "111222333", "0" );    
/*20*/ test( "aaAAaA", "4" );    
/*21*/ test( "121232313", "12" );    
/*22*/ test( "1ab1b", "1" );    
/*23*/ test( "abcdefbadcfe", "12" );    
/*24*/ test( "abxcdefbadcfex", "14" );    
/*25*/ test( "dtnwtkt", "0" );    
/*26*/ test( "mvubvpp", "0" );    
/*27*/ test( "moggscd", "0" );    
/*28*/ test( "kzkjzpkw", "2" );    
/*29*/ test( "fbifybre", "1" );    
/*30*/ test( "rrrfjryki", "1" );    
/*31*/ test( "wrbbdwsdwtx", "2" );    
/*32*/ test( "vvucugvxbvgx", "9" );    
/*33*/ test( "ojkjzyasjwbfjj", "5" );    
/*34*/ test( "ggffyuxnkyypifff", "5" );    
/*35*/ test( "vcgtcqlwrepwvkkogl", "4" );    
/*36*/ test( "xeqtmmgppwcjpcisogxbs", "4" );    
/*37*/ test( "lukltpeucrqfvcupnpxwmoj", "6" );    
/*38*/ test( "zpzswlkkoqwwndwpfdpkhtzgtn", "31" );    
/*39*/ test( "bkfeflagfvluelududqjcvfyvytfw", "45" );    
/*40*/ test( "rvqbhfmcjjqlpqzulzerxgyowiwrfkmhw", "26" );    
/*41*/ test( "qyxvpdtoeexbqsethwjwmqszcxxjnsdoeaet", "144" );    
/*42*/ test( "rjmsgmswhcolmpbhmpncziymydyalrcnevsrespj", "133" );    
/*43*/ test( "oxetnyjzjbysnwktfwzndlejfndsqeetsnjvsicyjehd", "395" );    
/*44*/ test( "wzvddnddzogywcqxbyvagbzmsmtcmrrlbnebmvhaemjouaqim", "219" );    
/*45*/ test( "karhphxcxqgsyorhusbumbqzocuzvnwzwcpxgsksrviihxrgsrhji", "461" );    
/*46*/ test( "oxgbononhqdxzmkysgijwvxljpaazmgkurkpffeuwywwuyxhyfkicgyzyc", "441" );    
/*47*/ test( "sdgsrddwsrwqthhdvhrjhgtxwgurgyiygtktgtughtogzaqmcafkljgpniddsvb", "1077" );    
/*48*/ test( "qemhecchkgzhxmdcsltwhpoyhkapckkkzosmklcvzkiiucrvzzznmhjfcdumuflavxik", "1711" );    
/*49*/ test( "ffqmsirwpxrzfkbvmmfeptkbhnrvfcywthkwkbycmayhhkgvuyecbwwofwthlmzruphrcujwhr", "2440" );
}