［抄题］: ［思维问题］: ［一句话思路］:Long.valueOf(2)转换为long型再做 ［输入量］:空: 正常情况:特大:特小:程序里处理到的特殊情况:异常情况(不合法不合理的输入): ［画图］: ［一刷］: 取出数从i = 1开始,不用从0开始.因为第一个符合条件的数是1 .先定义number 是long1,之后再换. ［二刷］: primes[0] = Long.valueOf(2);这样大写 Long[]表示长数组的类型 queue用poll 最后返回intValue ［三刷］:…

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: Input: 6 Output: true Explanation: 6 = 2 × 3 Example 2: Input: 8 Output: true Explanation: 8 = 2…

编写程序判断给定的数是否为丑数.丑数就是只包含质因子 2, 3, 5 的正整数.例如, 6, 8 是丑数,而 14 不是,因为它包含了另外一个质因子 7.注意:    1 也可以被当做丑数.    输入不会超过32位整数的范围.详见:https://leetcode.com/problems/ugly-number/description/ Java实现: class Solution { public boolean isUgly(int num) { if(num<=0){ return f…

Write a program to find the n-th ugly number. Ugly numbers are positive numbers whose prime factors only include 2, 3, 5. Example: Input: n = 10 Output: 12 Explanation: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12 is the sequence of the first 10 ugly numbers. Note…

Write a program to find the nth super ugly number. Super ugly numbers are positive numbers whose all prime factors are in the given prime list primes of sizek. For example, [1, 2, 4, 7, 8, 13, 14, 16, 19, 26, 28, 32] is the sequence of the first 12 s…

[python]Leetcode每日一题-丑数2 [题目描述] 给你一个整数 n ,请你找出并返回第 n 个 丑数 . 丑数 就是只包含质因数 2.3 和/或 5 的正整数. 示例1: 输入:n = 10 输出:12 解释:[1, 2, 3, 4, 5, 6, 8, 9, 10, 12] 是由前 10 个丑数组成的序列. 示例2: 输入:n = 1 输出:1 解释:1 通常被视为丑数. 提示: 1 <= n <= 1690 [分析] dp 思路就是开一个数组,若x为丑数,则2x.3x.5x均为…

[python]Leetcode每日一题-丑数 [题目描述] 给你一个整数 n ,请你判断 n 是否为 丑数 .如果是,返回 true :否则,返回 false . 丑数 就是只包含质因数 2.3 和/或 5 的正整数. 示例1: 输入:n = 6 输出:true 解释:6 = 2 × 3 示例2: 输入:n = 8 输出:true 解释:8 = 2 × 2 × 2 示例3: 输入:n = 14 输出:false 解释:14 不是丑数,因为它包含了另外一个质因数 7 . 示例4: 输入:n =…

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. For example, 6, 8 are ugly while 14 is not ugly since it includes another prime factor 7. Note that 1 is ty…

Write a program to find the n-th ugly number. Ugly numbers are positive numbers whose prime factors only include 2, 3, 5. Example: Input: n = 10 Output: 12 Explanation: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12 is the sequence of the first 10 ugly numbers. Note…

题目描述: 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. For example, 6, 8 are ugly while 14 is not ugly since it includes another prime factor 7. Note that 1…