添加 problem 263

Algorithms/263. Ugly Number/263. Ugly Number.go

@@ -0,0 +1,10 @@
+package leetcode
+
+func isUgly(num int) bool {
+	for i := 2; i < 6 && num > 0; i++ {
+		for num%i == 0 {
+			num /= i
+		}
+	}
+	return num == 1
+}

Algorithms/263. Ugly Number/263. Ugly Number_test.go

@@ -0,0 +1,52 @@
+package leetcode
+
+import (
+	"fmt"
+	"testing"
+)
+
+type question263 struct {
+	para263
+	ans263
+}
+
+// para 是参数
+// one 代表第一个参数
+type para263 struct {
+	one int
+}
+
+// ans 是答案
+// one 代表第一个答案
+type ans263 struct {
+	one bool
+}
+
+func Test_Problem263(t *testing.T) {
+
+	qs := []question263{
+
+		question263{
+			para263{6},
+			ans263{true},
+		},
+
+		question263{
+			para263{8},
+			ans263{true},
+		},
+
+		question263{
+			para263{14},
+			ans263{false},
+		},
+	}
+
+	fmt.Printf("------------------------Leetcode Problem 263------------------------\n")
+
+	for _, q := range qs {
+		_, p := q.ans263, q.para263
+		fmt.Printf("【input】:%v       【output】:%v\n", p, isUgly(p.one))
+	}
+	fmt.Printf("\n\n\n")
+}

Algorithms/263. Ugly Number/README.md

@@ -0,0 +1,44 @@
+# [263. Ugly Number](https://leetcode.com/problems/ugly-number/)
+
+## 题目
+
+Write a program to check whether a given number is an ugly number.
+
+Ugly numbers are positive numbers whose prime factors only include 2, 3, 5.
+
+Example 1:
+
+```c
+Input: 6
+Output: true
+Explanation: 6 = 2 × 3
+```
+
+Example 2:
+
+```c
+Input: 8
+Output: true
+Explanation: 8 = 2 × 2 × 2
+```
+
+Example 3:
+
+```c
+Input: 14
+Output: false 
+Explanation: 14 is not ugly since it includes another prime factor 7.
+```
+
+Note:
+
+- 1 is typically treated as an ugly number.
+- Input is within the 32-bit signed integer range: [−2^31,  2^31 − 1].
+
+
+## 题目大意
+
+判断一个数字是否是“丑陋数字”，“丑陋数字”的定义是一个正数，并且因子只包含 2，3，5 。
+
+
+