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go/doc/progs/sortmain.go
Rob Pike 40d5435278 update tutorial to new language.
add a section on printing
add a section on allocation

R=rsc
DELTA=500  (278 added, 15 deleted, 207 changed)
OCL=22381
CL=22456
2009-01-09 15:16:31 -08:00

67 lines
1.5 KiB
Go

// 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 "sort"
func ints() {
data := []int{74, 59, 238, -784, 9845, 959, 905, 0, 0, 42, 7586, -5467984, 7586};
a := sort.IntArray(data);
sort.Sort(a);
if !sort.IsSorted(a) {
panic()
}
}
func strings() {
data := []string{"monday", "tuesday", "wednesday", "thursday", "friday", "saturday", "sunday"};
a := sort.StringArray(data);
sort.Sort(a);
if !sort.IsSorted(a) {
panic()
}
}
type Day struct {
num int;
short_name string;
long_name string;
}
type DayArray struct {
data []*Day;
}
func (p *DayArray) Len() int { return len(p.data); }
func (p *DayArray) Less(i, j int) bool { return p.data[i].num < p.data[j].num; }
func (p *DayArray) Swap(i, j int) { p.data[i], p.data[j] = p.data[j], p.data[i]; }
func days() {
Sunday := Day{ 0, "SUN", "Sunday" };
Monday := Day{ 1, "MON", "Monday" };
Tuesday := Day{ 2, "TUE", "Tuesday" };
Wednesday := Day{ 3, "WED", "Wednesday" };
Thursday := Day{ 4, "THU", "Thursday" };
Friday := Day{ 5, "FRI", "Friday" };
Saturday := Day{ 6, "SAT", "Saturday" };
data := []*Day{&Tuesday, &Thursday, &Sunday, &Monday, &Friday};
a := DayArray{data};
sort.Sort(&a);
if !sort.IsSorted(&a) {
panic()
}
for i, d := range data {
print(d.long_name, " ")
}
print("\n")
}
func main() {
ints();
strings();
days();
}