day 8 work and jumbled together

utils/arrays/arrays.go

@@ -0,0 +1,49 @@
+package arrays
+
+func FindFirst(list []string, filter func(string) bool) string {
+	for _, item := range list {
+		if filter(item) {
+			return item
+		}
+	}
+	panic("No item found that matches criteria")
+}
+
+func FindFirstInt(list []int, filter func(int) bool) int {
+	for _, item := range list {
+		if filter(item) {
+			return item
+		}
+	}
+	panic("No item found that matches criteria")
+}
+
+func FindAll(list []string, filter func(string) bool) []string {
+	var filteredList []string
+	for _, item := range list {
+		if filter(item) {
+			filteredList = append(filteredList, item)
+		}
+	}
+
+	return filteredList
+}
+
+func FindAllInt(list []int, filter func(int) bool) []int {
+	var filteredList []int
+	for _, item := range list {
+		if filter(item) {
+			filteredList = append(filteredList, item)
+		}
+	}
+
+	return filteredList
+}
+
+func MapStrToInt(input []string, fn func(string) int) []int {
+	var retVals []int
+	for _, s := range input {
+		retVals = append(retVals, fn(s))
+	}
+	return retVals
+}