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| // Copyright 2011 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 sort_test
|
| import (
| "fmt"
| "math"
| "sort"
| )
|
| func ExampleInts() {
| s := []int{5, 2, 6, 3, 1, 4} // unsorted
| sort.Ints(s)
| fmt.Println(s)
| // Output: [1 2 3 4 5 6]
| }
|
| func ExampleIntsAreSorted() {
| s := []int{1, 2, 3, 4, 5, 6} // sorted ascending
| fmt.Println(sort.IntsAreSorted(s))
|
| s = []int{6, 5, 4, 3, 2, 1} // sorted descending
| fmt.Println(sort.IntsAreSorted(s))
|
| s = []int{3, 2, 4, 1, 5} // unsorted
| fmt.Println(sort.IntsAreSorted(s))
|
| // Output: true
| // false
| // false
| }
|
| func ExampleFloat64s() {
| s := []float64{5.2, -1.3, 0.7, -3.8, 2.6} // unsorted
| sort.Float64s(s)
| fmt.Println(s)
|
| s = []float64{math.Inf(1), math.NaN(), math.Inf(-1), 0.0} // unsorted
| sort.Float64s(s)
| fmt.Println(s)
|
| // Output: [-3.8 -1.3 0.7 2.6 5.2]
| // [NaN -Inf 0 +Inf]
| }
|
| func ExampleFloat64sAreSorted() {
| s := []float64{0.7, 1.3, 2.6, 3.8, 5.2} // sorted ascending
| fmt.Println(sort.Float64sAreSorted(s))
|
| s = []float64{5.2, 3.8, 2.6, 1.3, 0.7} // sorted descending
| fmt.Println(sort.Float64sAreSorted(s))
|
| s = []float64{5.2, 1.3, 0.7, 3.8, 2.6} // unsorted
| fmt.Println(sort.Float64sAreSorted(s))
|
| // Output: true
| // false
| // false
| }
|
| func ExampleReverse() {
| s := []int{5, 2, 6, 3, 1, 4} // unsorted
| sort.Sort(sort.Reverse(sort.IntSlice(s)))
| fmt.Println(s)
| // Output: [6 5 4 3 2 1]
| }
|
| func ExampleSlice() {
| people := []struct {
| Name string
| Age int
| }{
| {"Gopher", 7},
| {"Alice", 55},
| {"Vera", 24},
| {"Bob", 75},
| }
| sort.Slice(people, func(i, j int) bool { return people[i].Name < people[j].Name })
| fmt.Println("By name:", people)
|
| sort.Slice(people, func(i, j int) bool { return people[i].Age < people[j].Age })
| fmt.Println("By age:", people)
| // Output: By name: [{Alice 55} {Bob 75} {Gopher 7} {Vera 24}]
| // By age: [{Gopher 7} {Vera 24} {Alice 55} {Bob 75}]
| }
|
| func ExampleSliceStable() {
|
| people := []struct {
| Name string
| Age int
| }{
| {"Alice", 25},
| {"Elizabeth", 75},
| {"Alice", 75},
| {"Bob", 75},
| {"Alice", 75},
| {"Bob", 25},
| {"Colin", 25},
| {"Elizabeth", 25},
| }
|
| // Sort by name, preserving original order
| sort.SliceStable(people, func(i, j int) bool { return people[i].Name < people[j].Name })
| fmt.Println("By name:", people)
|
| // Sort by age preserving name order
| sort.SliceStable(people, func(i, j int) bool { return people[i].Age < people[j].Age })
| fmt.Println("By age,name:", people)
|
| // Output: By name: [{Alice 25} {Alice 75} {Alice 75} {Bob 75} {Bob 25} {Colin 25} {Elizabeth 75} {Elizabeth 25}]
| // By age,name: [{Alice 25} {Bob 25} {Colin 25} {Elizabeth 25} {Alice 75} {Alice 75} {Bob 75} {Elizabeth 75}]
| }
|
| func ExampleStrings() {
| s := []string{"Go", "Bravo", "Gopher", "Alpha", "Grin", "Delta"}
| sort.Strings(s)
| fmt.Println(s)
| // Output: [Alpha Bravo Delta Go Gopher Grin]
| }
|
|
