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Challenges It's Hip to be Square

PHP, 69 37 bytes <?=($y=sqrt($x=fgets(STDIN)))*$y==$x; Try it online! Golfed 32 bytes thanks to @Shaggy's advice.

posted 3y ago by General Sebast1an‭  ·  edited 3y ago by General Sebast1an‭

Answer
#4: Post edited by user avatar General Sebast1an‭ · 2021-09-14T11:37:37Z (over 3 years ago)
  • # [PHP], 69 bytes
  • <!-- language-all: lang-php -->
  • <?php $x=fgets(STDIN);$y=sqrt($x);if($y*$y==$x){echo 0;}
  • [Try it online!][TIO-ktfq3wel]
  • [PHP]: https://php.net/
  • [TIO-ktfq3wel]: https://tio.run/##K8go@P/fxr4go0BBpcI2LT21pFgjOMTF00/TWqXStriwqERDpULTOjNNQ6VSCyhiC@RVpyZn5CsYWNf@/29mDAA "PHP – Try It Online"
  • # [PHP], <s>69</s> 37 bytes
  • <!-- language-all: lang-php -->
  • <?=($y=sqrt($x=fgets(STDIN)))*$y==$x;
  • [Try it online!][TIO-ktk01a0x]
  • Golfed 32 bytes thanks to [**@Shaggy**](https://codegolf.codidact.com/users/53588)'s [advice](https://codegolf.codidact.com/comments/thread/4491#comment-13584).
  • [PHP]: https://php.net/
  • [TIO-ktk01a0x]: https://tio.run/##K8go@P/fxt5WQ6XStriwqERDpcI2LT21pFgjOMTF009TU1MLKGOrUmH9/78lAA "PHP – Try It Online"
#3: Post edited by user avatar General Sebast1an‭ · 2021-09-11T11:52:02Z (over 3 years ago)
  • # [PHP], <s>69</s> 56 bytes
  • <!-- language-all: lang-php -->
  • <?php $x=fgets(STDIN);$y=sqrt($x);if($y*$y==$x){echo 0;}
  • [Try it online!][TIO-ktfq3wel]
  • Golfed 13 bytes because it was specified that nothing can be printed on one end of the condition, as long as the other has output. I know, I know. Abuse, hehe.
  • [PHP]: https://php.net/
  • [TIO-ktfq3wel]: https://tio.run/##K8go@P/fxr4go0BBpcI2LT21pFgjOMTF00/TWqXStriwqERDpULTOjNNQ6VSCyhiC@RVpyZn5CsYWNf@/29mDAA "PHP – Try It Online"
  • # [PHP], 69 bytes
  • <!-- language-all: lang-php -->
  • <?php $x=fgets(STDIN);$y=sqrt($x);if($y*$y==$x){echo 0;}
  • [Try it online!][TIO-ktfq3wel]
  • [PHP]: https://php.net/
  • [TIO-ktfq3wel]: https://tio.run/##K8go@P/fxr4go0BBpcI2LT21pFgjOMTF00/TWqXStriwqERDpULTOjNNQ6VSCyhiC@RVpyZn5CsYWNf@/29mDAA "PHP – Try It Online"
#2: Post edited by user avatar General Sebast1an‭ · 2021-09-11T11:48:34Z (over 3 years ago)
  • # [PHP], 69 bytes
  • <!-- language-all: lang-php -->
  • <?php $x=fgets(STDIN);$y=sqrt($x);if($y*$y==$x){echo 0;}else{echo 1;}
  • [Try it online!][TIO-ktfhlo4g]
  • [PHP]: https://php.net/
  • [TIO-ktfhlo4g]: https://tio.run/##K8go@P/fxr4go0BBpcI2LT21pFgjOMTF00/TWqXStriwqERDpULTOjNNQ6VSCyhiC@RVpyZn5CsYWNem5hSnQjiG1rX//5sZAwA "PHP – Try It Online"
  • # [PHP], <s>69</s> 56 bytes
  • <!-- language-all: lang-php -->
  • <?php $x=fgets(STDIN);$y=sqrt($x);if($y*$y==$x){echo 0;}
  • [Try it online!][TIO-ktfq3wel]
  • Golfed 13 bytes because it was specified that nothing can be printed on one end of the condition, as long as the other has output. I know, I know. Abuse, hehe.
  • [PHP]: https://php.net/
  • [TIO-ktfq3wel]: https://tio.run/##K8go@P/fxr4go0BBpcI2LT21pFgjOMTF00/TWqXStriwqERDpULTOjNNQ6VSCyhiC@RVpyZn5CsYWNf@/29mDAA "PHP – Try It Online"
#1: Initial revision by user avatar General Sebast1an‭ · 2021-09-11T07:49:18Z (over 3 years ago) 
# [PHP], 69 bytes

<!-- language-all: lang-php -->

    <?php $x=fgets(STDIN);$y=sqrt($x);if($y*$y==$x){echo 0;}else{echo 1;}

[Try it online!][TIO-ktfhlo4g]

[PHP]: https://php.net/
[TIO-ktfhlo4g]: https://tio.run/##K8go@P/fxr4go0BBpcI2LT21pFgjOMTF00/TWqXStriwqERDpULTOjNNQ6VSCyhiC@RVpyZn5CsYWNem5hSnQjiG1rX//5sZAwA "PHP – Try It Online"