zoukankan      html  css  js  c++  java
  • 824. Goat Latin

    package LeetCode_824
    
    /**
     * 824. Goat Latin
     * https://leetcode.com/problems/goat-latin/
     * A sentence S is given, composed of words separated by spaces. Each word consists of lowercase and uppercase letters only.
    We would like to convert the sentence to "Goat Latin" (a made-up language similar to Pig Latin.)
    The rules of Goat Latin are as follows:
    If a word begins with a vowel (a, e, i, o, or u), append "ma" to the end of the word.
    For example, the word 'apple' becomes 'applema'.
    If a word begins with a consonant (i.e. not a vowel), remove the first letter and append it to the end, then add "ma".
    For example, the word "goat" becomes "oatgma".
    Add one letter 'a' to the end of each word per its word index in the sentence, starting with 1.
    For example, the first word gets "a" added to the end, the second word gets "aa" added to the end and so on.
    Return the final sentence representing the conversion from S to Goat Latin.
    
    Example 1:
    Input: "I speak Goat Latin"
    Output: "Imaa peaksmaaa oatGmaaaa atinLmaaaaa"
    
    Example 2:
    Input: "The quick brown fox jumped over the lazy dog"
    Output: "heTmaa uickqmaaa rownbmaaaa oxfmaaaaa umpedjmaaaaaa overmaaaaaaa hetmaaaaaaaa azylmaaaaaaaaa ogdmaaaaaaaaaa"
     * */
    class Solution {
        fun toGoatLatin(S: String): String {
            /*
            * solution: rule by requirement, Time:O(n), Space:O(n)
            * */
            val result = StringBuilder()
            val vowels = listOf('a', 'e', 'i', 'o', 'u', 'A', 'E', 'I', 'O', 'U')
            val aBuilder = StringBuilder("a")
            val list = S.split(" ")
            for (item in list) {
                val firstChar = item[0]
                if (firstChar in vowels) {
                    result.append(item).append("ma")
                } else {
                    result.append(item.substring(1, item.length)).append(firstChar).append("ma")
                }
                result.append(aBuilder)
                result.append(" ")
                //increasing a
                aBuilder.append("a")
            }
            //remove last " "
            result.setLength(result.length - 1)
            return result.toString()
        }
    }
  • 相关阅读:
    const修饰指针
    C++调用C中编译过的函数要加extern "C"
    linux常用指令(1)
    链式队列实现
    存储类别和类型限定词
    数组,指针和引用
    字符函数和字符串函数
    C/C++编译的程序占用的内存
    结构体1(嵌套使用)
    输入输出函数小结
  • 原文地址:https://www.cnblogs.com/johnnyzhao/p/14071445.html
Copyright © 2011-2022 走看看