diff --git a/challenge-19/submissions/livingpool/solution-template.go b/challenge-19/submissions/livingpool/solution-template.go new file mode 100644 index 000000000..3a1b8b678 --- /dev/null +++ b/challenge-19/submissions/livingpool/solution-template.go @@ -0,0 +1,74 @@ +package main + +import ( + "fmt" +) + +func main() { + // Example slice for testing + numbers := []int{3, 1, 4, 1, 5, 9, 2, 6} + + // Test FindMax + max := FindMax(numbers) + fmt.Printf("Maximum value: %d\n", max) + + // Test RemoveDuplicates + unique := RemoveDuplicates(numbers) + fmt.Printf("After removing duplicates: %v\n", unique) + + // Test ReverseSlice + reversed := ReverseSlice(numbers) + fmt.Printf("Reversed: %v\n", reversed) + + // Test FilterEven + evenOnly := FilterEven(numbers) + fmt.Printf("Even numbers only: %v\n", evenOnly) +} + +// FindMax returns the maximum value in a slice of integers. +// If the slice is empty, it returns 0. +func FindMax(numbers []int) int { + if (len(numbers) == 0) { + return 0 + } + res := numbers[0] + for _, val := range numbers { + res = max(res, val) + } + return res +} + +// RemoveDuplicates returns a new slice with duplicate values removed, +// preserving the original order of elements. +func RemoveDuplicates(numbers []int) []int { + m := make(map[int]bool) + res := make([]int, 0, len(numbers)) + for _, val := range numbers { + if _, ok := m[val]; !ok { + m[val] = true + res = append(res, val) + } + } + return res +} + +// ReverseSlice returns a new slice with elements in reverse order. +func ReverseSlice(slice []int) []int { + res := make([]int, 0, len(slice)) + for i := range len(slice) { + res = append(res, slice[len(slice)-1-i]) + } + return res +} + +// FilterEven returns a new slice containing only the even numbers +// from the original slice. +func FilterEven(numbers []int) []int { + res := make([]int, 0, len(numbers)) + for _, val := range numbers { + if val % 2 == 0 { + res = append(res, val) + } + } + return res +}