search
Homephp教程php手册php算法实例分享,php算法实例

php算法实例分享,php算法实例

只打印0

  具体个数由输入的参数n决定

  如n=5就打印00000

<&#63;php
  $n = $_GET['n'];
  for ($i=0; $i < $n; $i++) {
    echo "0";
  }
&#63;>

打印一行 0101010101010101010101

  具体个数由输入的参数n决定

  如test.php?n=3打印010

<&#63;php
  $n = $_GET['n'];
  for ($i=0; $i < $n; $i++) {
    if ($i % 2 ==0) {
      echo "0";
    } else{
      echo "1";
    }
  }
&#63;>

实现1 00 111 0000 11111

  for if 实现

<&#63;php

for ($i = 0; $i < 10; $i++) {
  for ($j = 0; $j <= $i; $j++) {
    if ($i % 2 == 0) {
      echo '0';
    } else {
      echo '1';
    }
  }
  echo '<br/>';
}

&#63;>

  for switch 实现

<&#63;php

for ($i = 0; $i < 10; $i++) {
  for ($j = 0; $j <= $i; $j++) {
    switch ($j % 2) {
      case '0':
      echo "0";
      break;
    case '1':
      echo "1";
      break;
    }
  }
  echo '<br/>';
}

&#63;>

  while if 实现

  while switch 实现

<&#63;php

$i = 0;
while ($i < 10) {
  $j = 0;
  while ($j <= $i) {
    switch ($i % 2) {
      case 0:
        echo '0';
        break;
      case 1:
        echo '1';
        break;
    }
    $j++;
  }
  echo '<br/>';
  $i++;
}

&#63;>

实现0 01 010 0101……

实现0 01 012 0123 3210 210 10 0

做个计算器

  如test.php?a=1&b=2&operator=jia输出3

  如test.php?a=5&b=2&operator=jian输出3

  如test.php?a=2&b=5&operator=cheng输出10

  如test.php?a=6&b=3&operator=chu输出2

<&#63;php
  $a = $_GET['a'];
  $b = $_GET['b'];
  $operator = $_GET['operator'];
  function calculate($a,$b,$operator) {
    switch ($operator) {
      case 'jia':
        $result = $a + $b;
        return $result;
        break;
      case 'jian':
        $result = $a - $b;
        return $result;
      break;
      case 'cheng':
        $result = $a * $b;
        return $result;
      break;
      case 'chu':
        $result = $a / $b;
        return $result;
      break;
    }
  }
  echo calculate($a,$b,$operator);
&#63;>

以上所述就是本文的全部内容了,希望大家能够喜欢。

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

MantisBT

MantisBT

Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

Dreamweaver Mac version

Dreamweaver Mac version

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

PhpStorm Mac version

PhpStorm Mac version

The latest (2018.2.1) professional PHP integrated development tool

WebStorm Mac version

WebStorm Mac version

Useful JavaScript development tools