Solve '412. Fizz Buzz'

Author: obalunenko

1-two-sum/sum_test.go

@@ -44,18 +44,18 @@ func Test_twoSum(t *testing.T) {
 		{
 			name: "no target sum",
 			args: args{
-				nums:   []int{9,2,99},
+				nums:   []int{9, 2, 99},
 				target: 1000,
 			},
 			want: nil,
 		},
 		{
 			name: "3,2,4",
 			args: args{
-				nums:   []int{3,2,4},
+				nums:   []int{3, 2, 4},
 				target: 6,
 			},
-			want: []int{1,2},
+			want: []int{1, 2},
 		},
 	}
 

412.-fizz-buzz/fizz.go

@@ -0,0 +1,27 @@
+package fizz
+
+import "strconv"
+
+func fizzBuzz(n int) []string {
+	res := make([]string, n)
+	for i := 1; i <= n; i++ {
+		if i%15 == 0 {
+			res[i-1] = "FizzBuzz"
+			continue
+		}
+
+		if i%3 == 0 {
+			res[i-1] = "Fizz"
+			continue
+		}
+
+		if i%5 == 0 {
+			res[i-1] = "Buzz"
+			continue
+		}
+
+		res[i-1] = strconv.Itoa(i)
+	}
+
+	return res
+}

412.-fizz-buzz/fizz_test.go

@@ -0,0 +1,48 @@
+package fizz
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func Test_fizzBuzz(t *testing.T) {
+	type args struct {
+		n int
+	}
+	tests := []struct {
+		name string
+		args args
+		want []string
+	}{
+		{
+			name: "",
+			args: args{
+				n: 15,
+			},
+			want: []string{
+				"1",
+				"2",
+				"Fizz",
+				"4",
+				"Buzz",
+				"Fizz",
+				"7",
+				"8",
+				"Fizz",
+				"Buzz",
+				"11",
+				"Fizz",
+				"13",
+				"14",
+				"FizzBuzz",
+			},
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got := fizzBuzz(tt.args.n)
+			assert.Equal(t, tt.want, got)
+		})
+	}
+}

412.-fizz-buzz/spec.md

@@ -0,0 +1,32 @@
+# 412. Fizz Buzz
+
+<https://leetcode.com/problems/fizz-buzz/>
+
+Write a program that outputs the string representation of numbers from 1 to n.
+
+But for multiples of three it should output “Fizz” instead of the number and for the multiples of five output “Buzz”. For numbers which are multiples of both three and five output “FizzBuzz”.
+
+Example:
+
+```text
+n = 15,
+
+Return:
+[
+    "1",
+    "2",
+    "Fizz",
+    "4",
+    "Buzz",
+    "Fizz",
+    "7",
+    "8",
+    "Fizz",
+    "Buzz",
+    "11",
+    "Fizz",
+    "13",
+    "14",
+    "FizzBuzz"
+]
+```