PHP Program to Divide Without Slash with Explanation
PHP
Hard
PHP Operators
32 views
1 min read
87 words
This problem helps you practice core PHP fundamentals in a practical way. It builds intuition around divide, slash, quotient. Let’s break it down step by step so you can implement it confidently.
Problem Statement
Input a b (a>=0, b>0). Print quotient and remainder without using / or %.
Input Format
One line: a b.
Output Format
Two integers: q r.
Constraints
0
Code Solution
This explanation is written for learning purposes and to help beginners understand the concept clearly.
<?php
$inputText=trim(stream_get_contents(STDIN));
if($inputText==='') exit;
[$a,$b]=array_map('intval',preg_split('/\\s+/', $inputText));
$q=0; $r=$a;
for($k=30;$k>=0;$k--){
$step=$b<<$k;
if($step<=0) continue;
if($step<=$r){
$r-=$step;
$q |= (1<<$k);
}
}
echo $q.' '.$r;
?>
Common Mistakes
- Misreading input/output format.
- Not handling constraints and edge cases.
- Off-by-one errors in loops.
- Forgetting to reset variables between test cases (if any).
Solution Guide
Problem
Input a b (a>=0, b>0). Print quotient and remainder without using / or %.
Input / Output
Output
Two integers: q r.
Details
Common Mistakes
- Misreading input/output format.
- Not handling constraints and edge cases.
- Off-by-one errors in loops.
- Forgetting to reset variables between test cases (if any).
Official Solution
<?php
$inputText=trim(stream_get_contents(STDIN));
if($inputText==='') exit;
[$a,$b]=array_map('intval',preg_split('/\\s+/', $inputText));
$q=0; $r=$a;
for($k=30;$k>=0;$k--){
$step=$b<<$k;
if($step<=0) continue;
if($step<=$r){
$r-=$step;
$q |= (1<<$k);
}
}
echo $q.' '.$r;
?>
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