Question

用户输入他想要搜索的句子和单词。现在我们需要找出是否存在单词。不使用字符串函数

Answer 1

如果您不想使用字符串函数，则可以开发自己的函数，例如，您想要的功能将类似于此功能：

<div class="container">
  <div id="dataInfo">
      <h2>Information</h2>
      <div id="myCarousel" class="carousel" data-ride="carousel" test>
          <div class="carousel-inner row w-100 mx-auto" #cara="Carousel" [animationDuration]="300">
            <div class="carousel-item col-md-4 active">
              <div class="card">
                <img class="card-img-top img-fluid" src="https://images.freeimages.com/images/large-previews/85a/daisy-s-1375598.jpg"  width="100" height="100" alt="Card image cap">
                <div class="card-body">
                  <h4 class="card-title">Card 1</h4>
                  <p class="card-text">This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
                  <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
                </div>
              </div>
            </div>
            <div class="carousel-item col-md-4 active">
              <div class="card">

                <img class="card-img-top img-fluid" src="https://images.freeimages.com/images/large-previews/85a/daisy-s-1375598.jpg"  width="100" height="100" alt="Card image cap"><div class="card-body">
                  <h4 class="card-title">Card 2</h4>
                  <p class="card-text">This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
                  <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
                </div>
              </div>
            </div>
            <div class="carousel-item col-md-4 active">
              <div class="card">

                <img class="card-img-top img-fluid" src="https://images.freeimages.com/images/large-previews/85a/daisy-s-1375598.jpg"  width="100" height="100" alt="Card image cap"><div class="card-body">
                  <h4 class="card-title">Card 3</h4>
                  <p class="card-text">This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
                  <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
                </div>
              </div>
            </div>
            <div class="carousel-item col-md-4">
              <div class="card">

                <img class="card-img-top img-fluid" src="https://images.freeimages.com/images/large-previews/85a/daisy-s-1375598.jpg"  width="100" height="100" alt="Card image cap"><div class="card-body">
                  <h4 class="card-title">Card 4</h4>
                  <p class="card-text">This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
                  <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
                </div>
              </div>
            </div>
            <div class="carousel-item col-md-4">
              <div class="card">

                <img class="card-img-top img-fluid" src="https://images.freeimages.com/images/large-previews/85a/daisy-s-1375598.jpg"  width="100" height="100" alt="Card image cap"> <div class="card-body">
                  <h4 class="card-title">Card 5</h4>
                  <p class="card-text">This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
                  <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
                </div>
              </div>
            </div>
            <div class="carousel-item col-md-4">
              <div class="card">

                <img class="card-img-top img-fluid" src="https://images.freeimages.com/images/large-previews/85a/daisy-s-1375598.jpg"  width="100" height="100" alt="Card image cap"><div class="card-body">
                  <h4 class="card-title">Card 6</h4>
                  <p class="card-text">This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
                  <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
                </div>
              </div>
            </div>
            <div class="carousel-item col-md-4">
              <div class="card">

                <img class="card-img-top img-fluid" src="https://images.freeimages.com/images/large-previews/85a/daisy-s-1375598.jpg"  width="100" height="100" alt="Card image cap"><div class="card-body">
                  <h4 class="card-title">Card 7</h4>
                  <p class="card-text">This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
                  <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
                </div>
              </div>
            </div>
          </div>
          <a class="carousel-control-prev" role="button" (click)="cara.prev(3)">
            <span class="carousel-control-prev-icon" aria-hidden="true"></span>
            <span class="sr-only">Previous</span>
          </a>
          <a class="carousel-control-next" role="button" (click)="cara.next(3)">
            <span class="carousel-control-next-icon" aria-hidden="true"></span>
            <span class="sr-only">Next</span>
          </a>
        </div>

  </div>


</div>

在上面的示例中，“ str”将是您要搜索的字符串，“ word”将是您要搜索的字符串。

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