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go/doc/progs/eff_sequence.go
Shenghou Ma 5b7562dd6f doc/progs: use test/run.go for testing on Windows
cgo[1-4].go, go1.go couldn't be tested now
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contain a list of filenames in the current directory)

R=golang-dev, alex.brainman, rsc
CC=golang-dev
https://golang.org/cl/6218048
2012-09-03 03:49:03 +08:00

45 lines
759 B
Go

// cmpout
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
import (
"fmt"
"sort"
)
func main() {
seq := Sequence{6, 2, -1, 44, 16}
sort.Sort(seq)
fmt.Println(seq)
}
type Sequence []int
// Methods required by sort.Interface.
func (s Sequence) Len() int {
return len(s)
}
func (s Sequence) Less(i, j int) bool {
return s[i] < s[j]
}
func (s Sequence) Swap(i, j int) {
s[i], s[j] = s[j], s[i]
}
// Method for printing - sorts the elements before printing.
func (s Sequence) String() string {
sort.Sort(s)
str := "["
for i, elem := range s {
if i > 0 {
str += " "
}
str += fmt.Sprint(elem)
}
return str + "]"
}