67 lines
1.2 KiB
Go
67 lines
1.2 KiB
Go
package helper
|
|
|
|
import (
|
|
"errors"
|
|
"io/ioutil"
|
|
"sort"
|
|
"strconv"
|
|
"strings"
|
|
)
|
|
|
|
func GetInput(filename string) ([]string, error) {
|
|
content, err := ioutil.ReadFile(filename)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
lines := strings.Split(string(content), "\n")
|
|
return lines, err
|
|
}
|
|
|
|
func GetFile(filename string) (string, error) {
|
|
content, err := ioutil.ReadFile(filename)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
return string(content), err
|
|
}
|
|
|
|
func MapToNumber(strings []string) ([]int, error) {
|
|
var numbers []int
|
|
for _, line := range strings {
|
|
number, err := strconv.Atoi(line)
|
|
if err != nil {
|
|
return numbers, err
|
|
}
|
|
numbers = append(numbers, number)
|
|
}
|
|
return numbers, nil
|
|
}
|
|
|
|
func FindAddendsForSum (possibleAddends []int, sum int) (int, int, error) {
|
|
var array = make([]int,len(possibleAddends))
|
|
copy(array,possibleAddends)
|
|
sort.Ints(array)
|
|
p1 := 0
|
|
p2 := len(array) - 1
|
|
for p1 < p2 {
|
|
if array[p1]+array[p2] < sum {
|
|
p1++
|
|
}
|
|
if array[p1]+array[p2] > sum {
|
|
p2--
|
|
}
|
|
if array[p1]+array[p2] == sum {
|
|
return array[p1] , array[p2], nil
|
|
}
|
|
}
|
|
return 0,0,errors.New("No fitting Addends found")
|
|
}
|
|
|
|
func SliceIndex(limit int, predicate func(i int) bool) int {
|
|
for i := 0; i < limit; i++ {
|
|
if predicate(i) {
|
|
return i
|
|
}
|
|
}
|
|
return -1
|
|
} |