从字符串中删除重复的单词而不将其转换为数组

from the below code I'm trying to get common words(from two strings given) without converting the strings into array. The below code is getting and displaying the common words but the problem is, this code is not removing all the duplicates as it shows all the common words without removing duplicates. I tried searching, but the solution is to use split() and filter(). Is there any other way to remove duplicates.

从下面的代码我试图得到常见的单词(从两个字符串给出)而不将字符串转换为数组。下面的代码是获取并显示常用单词,但问题是,此代码并未删除所有重复项,因为它显示所有常用单词而不删除重复项。我尝试搜索,但解决方案是使用split()和filter()。有没有其他方法可以删除重复项。

Thanks so much in advance.

非常感谢提前。

function common() {
  var str1 = "is hello and he is the only hello is"
  var str2 = "is hello you and is and he and is the only";
  var min = 0;
  var max = 0;
  var count = 0;
  var count1 = 0;
  var count2 = 0;
  var out = '';
  var out2 = '';
  var out3 = '';
  var len1 = str1.length;
  var len2 = str2.length;
  var output = '';
  var temp = 0;
  var temp1 = 0;
  for (m = 0; m < str1.length; m++) {
    temp1 = 0;
    if (str1.charAt(m) == " " || m == str1.length - 1) {
      count1++;
      if (m == str1.length - 1) {
        out1 = str1.slice(temp, m + 1);
      } else {
        out1 = str1.slice(temp, m);
      }
      for (i = temp1; i < str2.length; i++) {
        if (str2.charAt(i) == " " || i == str2.length - 1) {
          if (i == str2.length - 1) {
            out2 = str2.slice(temp1, i + 1);
          } else {
            out2 = str2.slice(temp1, i);
          }
          temp1 = i + 1;
          if (out1 == out2) {
            if (out3.indexOf(out1) == -1) {
              out3 += out1 + ' ';
            } else if (out3.indexOf(out1) >= 0) {
              var r = out3.indexOf(out1);
              while (out3.charAt(r) != " ") {
                r++;
              }
              if (r != out1.length) {
                out3 += out1 + ' ';
              }
            }
          }
        }
      }
      temp = m + 1;
    }
  }
  console.log(out3);
  out = document.getElementById("tarea3");
  out.value = out3;
}

<textarea id="tarea"></textarea>
<textarea id="tarea2"></textarea>
<textarea id="tarea3"></textarea>
<button type="button" onclick="common()">Run</button>

1 个解决方案

#1

No arrays no regex you can get the common words like this. The rest is up to your processing.

没有阵列没有正则表达式你可以得到像这样的常用词。剩下的由您处理。

var str1 = "is hello and he is the only hello is",
    str2 = "is hello you and is and he and is the only",
     lut = {},
     stc = "",
       i = 0;

while (i <= str1.length) {
  if (str1[i] !== " " && i < str1.length) {
  	stc+=str1[i++];
  }  else {
  	lut[stc] = "unmatch";
  	stc = "";
  	++i;
  }
}

  i = 0;
stc = "";
while (i <= str2.length) {
  if (str2[i] !== " " && i < str2.length) {
  	stc+=str2[i++];
  }  else {
  	lut[stc] = lut[stc] ? "common" : "unmatch";
  	stc = "";
  	++i;
  }
}
console.log(lut);