将每个元素存储为单个字符的句子单词逆序的 C++ 程序


假设我们有一个输入字符串句子,其中每个元素都存储为单个字符,我们必须按单词逆序字符串。

因此,如果输入类似于 ["t","h","e"," ","m","a","n"," ","i","s"," ","n","l","c","e"], 则输出将为 ["n","l","c","e"," ","i","s"," ","m","a","n"," ","t","h","e"]

为了解决这个问题,我们将按照以下步骤进行操作 -

  • 逆序数组 s

  • j := 0

  • n := s 的大小

  • 对于初始化 i := 0,当 i < n 时,更新 (i 增加 1),执行 -

    • 如果 s[i] 和 ' ' 相同,则 -

      • 从索引 j 到 i 逆序数组 s

      • j := i + 1

  • 从索引 j 到 n 逆序数组 s

让我们看看以下实现以更好地理解 -

示例

 实时演示

#include <bits/stdc++.h>
using namespace std;
void print_vector(vector<auto> v){
   cout << "[";
   for(int i = 0; i<v.size(); i++){
      cout << v[i] << ", ";
   }
   cout << "]"<<endl;
}
class Solution {
   public:
   void reverseWords(vector<char>& s) {
      reverse(s.begin(), s.end());
      int j = 0;
      int n = s.size();
      for(int i = 0; i < n; i++){
         if(s[i] == ' '){
            reverse(s.begin() + j, s.begin() + i);
            j = i + 1;
         }
      }
      reverse(s.begin() + j, s.begin() + n);
   }
};
main(){
   Solution ob;
   vector<char> v = {'t','h','e',' ','m','a','n',' ','i','s','
   ','n','i','c','e'};
   ob.reverseWords(v);
   print_vector(v);
}

输入

{'t','h','e',' ','m','a','n',' ','i','s',' ','n','i','c','e'}

输出

[n, i, c, e, , i, s, , m, a, n, , t, h, e, ]

更新于: 2020-10-21

1K+ 浏览量

开启你的 职业之旅

完成课程获得认证

立即开始
广告