华为机试：单词重量_华为 单词平均重量

题目来源

• 华为机试：单词重量

题目描述

题目解析

思路：

• 求出一共有多少个字符
• 求出一个有多少个单词

然后计算

#include <iostream>
#include <string>
#include <iomanip>
using namespace std;
bool IsSeparator(char ch);
int CharCount(string str);
int WordCount(string sentence);
int main(int argc, char **argv)
{
    string sentence;
    while (getline(cin, sentence)) {
        if (!sentence.empty()) {
            int letterNum = CharCount(sentence);  // 统计有多少个字符
            int wordNum = WordCount(sentence);  // 统计有多少个单词
            cout << setiosflags(ios::fixed) << setprecision(2) << letterNum * 1.0 / wordNum << endl;
        }
    }
    return 0;
}
int WordCount(string sentence)
{
    int wordNum = 0;
    int len = sentence.length();
    int i = 0;
    while (true) {
        if (IsSeparator(sentence[i])) {
            while (i <= len - 1 && IsSeparator(sentence[i])) {
                i++;
            }
        }
        else if (!IsSeparator(sentence[i])) {
            wordNum++;
            while (i <= len - 1 && !IsSeparator(sentence[i])) {
                i++;
            }
        }
        if (i > len - 1) {
            break;
        }
    }
    return wordNum;
}
bool IsSeparator(char ch)
{
    if (ch == ' ' || ch == ',' || ch == '.')
        return true;
    return false;
}
int CharCount(string str)
{
    int cnt = 0;
    for (char c: str) {
        cnt += (isupper(c) || islower(c));
    }
    return cnt;
}
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