我如何在两个if语句之间创建两个for循环，只要其中包含两个重复出现的字母，该语句将仅接受该单词? [英] How do i create two for loops with an if statement inbetween that will only accept the word aslong as it has two reoccuring letters in it?

问题描述

int i = 0;
          //  int j = i + 1;
            int charCount = 0;

            for(i=0; i<word.Length;i++)
            {

                for ( int j= 1; i < word.Length; j++)
            
            {
                if(word.Substring(i)==word.Substring(j))
                {
                    charCount++;
                }
               
            }
                }


           if (charCount!=0)
                MessageBox.Show("Word Accepted");
           else

                MessageBox.Show("Word Accepted");

推荐答案

您所拥有的几乎是正确的主意.  但是，有两个问题.

What you have is close to the right idea.  However, there are a couple of problems.

1.除了第一个字符外，您还要将每个字母与其自身进行比较.  因此，您将把word [1]与word [1]进行比较，很可能会匹配.

1. Except for the very first character, you're going to compare each letter to itself.  So, you'll compare word[1] to word[1], and that's very likely going to match.

2.调用word.Substring(i)返回从元素i开始的其余字符串.

2. The call word.Substring(i) returns the rest of the string starting at element i.

因此，如果您执行以下操作:

So, if you do something like:

for(i = 0; i< word.Length-1; i ++)
    for(j = i + 1; j< word.Length; j ++)
        if(word [i] == word [j])
            charCount ++;

for( i = 0; i < word.Length-1; i++ )
    for( j = i+1; j < word.Length; j++ )
        if( word[i] == word[j] )
            charCount++;

这应该可以满足您的要求.

that should just about do what you want.

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