Here's the code
<?php
echo "<table border=\"0\">";
for ($d = 1; $d <= $times;$d++ )
{
echo "<tr><td>";
echo rand(1,6), "\n";
echo "</td></tr>";
}
echo "</table>"; ?>
I'm trying to get the max,min and sum of the rand(1,6), "\n";
But i can't figure it out. And it's killing me.
$rands = array(); // rand() storage
for($d = 1; $d <= $times; $d++){
$rands[$d] = rand(1, 6); // store rands
}
var_dump($min = min($rands)); // min() of rands
var_dump($min = max($rands)); // max() of rands
^ see sample code.
(PS: I use [$d] as he has a 1-based increment and it may be needed for his further logic. This way the rands keys match his $d and can be easily accessed later on.)
You need to collect the random numbers in an array, too:
echo "<table border=\"0\">";
$rands = array();
#################
for ($d = 1; $d <= $times; $d++)
{
echo "<tr><td>";
echo $rands[] = rand(1,6), "\n";
###########
echo "</td></tr>";
}
echo "</table>"; ?>
Afterwards you can make use of max, min and array_sum (all these links come with nice examples).
As your code already shows you should start to differ between code that does data-processing and code that does the HTML output:
// handle the data
$randomNumbers = array();
foreach (range(1, $times) as $d)
{
$randomNumbers[$d] = rand(1,6);
}
// output the data
echo '<table border="0">';
foreach ($randomNumbers as $number) {
printf("<tr><td>%d</tr></td>", $number);
}
echo "</table>";
<?php
$min = 10;
$max = -1;
$sum = 0;
for ($d = 1; $d <= $times; $d++) {
$n = rand(1, 6);
if ($n < $min) $min = $n;
if ($n > $max) $max = $n;
$sum += $n;
}
echo $min . ' ' . $max . ' ' . $sum . '<br/>';
?>
$sum=0;
for ($d = 1; $d <= $times;$d++ ) {
echo "<tr><td>";
$r=rand(1,6);
$sum +=$r;
echo "$r, \n";
echo "</td></tr>";
if ($d==1) { $min=$r; $max=$r; }
if ($r>$max) $max=$r;
if ($r<$min) $min=$r;
}
// do something with $min, $max and $sum;
<?php
$total = 0;
echo "<table border=\"0\">";
for ($d = 1; $d <= $times;$d++ )
{
$rand = rand(1,6);
$total += $rand;
$array[] = $rand;
echo "<tr><td>";
echo $rand, "\n";
echo "</td></tr>";
}
echo "</table>"; ?>
echo $total;
echo min($array);
echo max($array);
Related
When the number 6 is giving I need to calculate till 6: for example: 1+2+3+4+5+6=21. I also need to add the sums of each to an array like: 1+2=3, 1+2+3=6, 1+2+3+4=10, ...
I have tried to make the while loop to be printed and this working fine but nog for array purpose:
<?php
$number = $_POST['number'];
$i = 1;
$cal = 0;
$tussenBerekening = array();
while ($i <= $number) {
echo $i;
$cal = $cal + $i;
array_push($tussenBerekening, $cal);
if ($i != $number) {
echo " + ";
} else {
echo " = " . $cal;
}
$i++;
}
?>
This is my new code, it prints, but no total sum.
<?php
$number = $_POST['number'];
$i = 2;
$cal = 0;
$sum = 1;
$berekeningen = array();
while ($i <= $number) {
$sum .= "+" . $i;
array_push($berekeningen, $sum);
$i++;
}
print_r($berekeningen);
?>
Here's a solution:
$i = 1;
$number = 6;
while ($i <= $number) {
// generate array with values from 1 to $i
$array = range(1, $i);
// if there're more than 1 element in array - output sum
if (count($array) > 1) {
// 1+2+... part // sum of elements of array
echo implode('+', $array) . ' = ' . array_sum($array) . '<br />';
}
$i++;
}
I want to print number from 1 to 12 in matrix form and expected output is:
1 5 9
2 6 10
3 7 11
4 8 12
code:
<?php
for ($i=1; $i<=12; $i++)
{
for($j=1;$j<=$i;$j++)
{
echo $i." ";
}
echo "<br/>";
}
?>
I have got wrong output. So, How can I get expected output as I mention above? Please help me.
Thank You
Some "magic" code):
foreach (range(1,4) as $num) {
echo implode(' ', range($num,12,4)) . '<br />';
}
Version with for:
for ($i = 1; $i <= 4; $i++) {
for ($j = $i; $j <= 12; $j +=4) {
echo $j . ' ';
}
echo '<br />';
}
$z=0;
for ($x = 1; $x <= 4; $x++)
{
echo " $x ";
$z=$x;
for ($y = 1; $y <= 2; $y++)
{
$z=$z+4;
echo " $z ";
}
echo "\n";
}
$maxRow = 4;
$maxColumn = 3;
for ($row = 1; $row <= $maxRow; $row++)
{
for ($column = 1; $column <= $maxColumn; $column++) {
$number = $row + 4*($column-1);
echo $number." ";
}
echo "<br/>";
}
should work
foreach (range(1, 4) as $res) {
echo implode(' ', range($res, 12, 4));
echo "<br>";
}
I have to make a diamond-shaped asterisk using for loop, inside a table. It has to have "blank" <td> spaces before and after the asterisks to move and make it look centered, so it looks like a diamond. How do I do that? (I used PHP inside an HTML code.)
Code without the <tr> and <td> tags, it looked like a diamond because it was center aligned:
<center>
<?php
echo "<table border = 1>";
// loop for the pyramid
for($i = 1; $i <= 10; $i += 2) {
for($j = 1; $j <= $i; $j++) {
echo "* ";
}
echo "<br />";
}
// loop for the inverted pyramid, so it looks like a diamond
for($i = 7; $i >= 1; $i -= 2) {
for($j = 1; $j <= $i; $j++) {
echo "* ";
}
echo "<br />";
}
echo "</table>";
?>
</center>
Code with the <tr> and <td> tags, need "spaces" for it to look like it's center aligned:
<?php
echo "<table border = 1>";
// loop for the pyramid
echo "<tr>";
for($i = 1; $i <= 10; $i += 2) {
echo "<tr>";
for($j = 1; $j <= $i; $j++) {
echo "<td>* </td>";
}
echo "</tr>";
}
echo "</tr>";
// loop for the inverted pyramid, so it looks like a diamond
for($i = 7; $i >= 1; $i -= 2) {
echo "<tr>";
for($j = 1; $j <= $i; $j++) {
echo "<td>* </td>";
}
echo "<br />";
echo "</tr>";
}
echo "</table>";
?>
Please help!
Here is new Code with your solution. I have added logic to put blank td forward and backward to *
<?php
echo "<table border = 1>";
// loop for the pyramid
echo "<tr>";
$max = $initAmount = 10;
for($i = 1; $i <= $initAmount; $i += 2) {
$max = $max -2;
$halfTD = (int)$max/2;
echo "<tr>";
for($b = 1; $b <= $halfTD; $b++){
echo "<td></td>";
}
for($j = 1; $j <= $i; $j++) {
echo "<td>* </td>";
}
for($b = 1; $b <= $halfTD; $b++){
echo "<td></td>";
}
echo "</tr>";
}
echo "</tr>";
// loop for the inverted pyramid, so it looks like a diamond
$max = $initAmount = 10;
for($i = 7; $i >= 1; $i -= 2) {
$max = $max -2;
$diff = $initAmount - $max;
$blankTd = $diff/2;
echo "<tr>";
for($b = 1 ; $b <= $blankTd; $b++){
echo "<td></td>";
}
for($j = 1; $j <= $i; $j++) {
echo "<td>* </td>";
}
for($b = 1 ; $b <= $blankTd; $b++){
echo "<td></td>";
}
echo "</tr>";
}
echo "</table>";
?>
I used the code below without using a table to make a diamond shape.
<div style="text-align: center">
<?php
$n = 8;
if($n === 1){ die("input must be greater than 1"); }
$nn = ($n * 2);
$m = (ceil($nn / 2) + 1);
$temp = 0;
for($x = 1; $x <= $nn; $x++){
$temp = (($x < $m) ? ($temp + 1) : ($temp - 1));
$total = ($temp > 1 ? ((2 * $temp) - 1) : $temp);
echo nl2br(str_repeat('* ', $total) . "\r\n");
}
?>
I used the code below.
<div style="text-align: center">
<?php
$n = 8;
if($n === 1){ die("input must be greater than 1"); }
$nn = ($n * 2);
$m = (ceil($nn / 2) + 1);
$temp = 0;
for($x = 1; $x <= $nn; $x++){
$temp = (($x < $m) ? ($temp + 1) : ($temp - 1));
$total = ($temp > 1 ? ((2 * $temp) - 1) : $temp);
echo nl2br(str_repeat('* ', $total) . "\r\n");
}
?>
<?php
for($i=0;$i<=5;$i++){
for($j=5;$j>=$i;$j--){
echo ' ';
}
for($k=0;$k<=$i;$k++){
echo '*';
}
echo '<br />';
}
for($i=0;$i<=4;$i++){
for($k=0;$k<=$i+1;$k++){
echo ' ';
}
for($j=4;$j>=$i;$j--){
echo '*';
}
echo '<br />';
}
?>
<?php
echo "<table border='1'><br />";
for ($row = 0; $row < 10; $row ++) {
echo "<tr>";
for ($col = 0; $col < 5; $col ++) {
$rand = rand (1, 200);
echo "<td>", $rand, "</td>";
}
echo "</tr>";
}
echo "</table>";
?>
Here is code but my question is how can I find max and min from values of the table? Do I have to make random numbers somehow into array?
You can do as following without changing much of your code
<?php
$array = array(); // <-- added code
echo "<table border='1'><br />";
for ($row = 0; $row < 10; $row ++) {
echo "<tr>";
for ($col = 0; $col < 5; $col ++) {
$rand = rand(1, 200);
$array[] = $rand; // <-- added code
echo "<td>", $rand, "</td>";
}
echo "</tr>";
}
echo "</table>";
$min = min($array); // <--- added code
$max = max($array); // <--- added code
?>
Check it out the max and min value of an aray in PHP using library function.
for($col = 0; $col < 5; $col ++) {
$rand[] = rand (1, 200);
}
echo $max = max($rand)."<br/>";
echo $min = min($rand)."<br/>";
print_r($rand);
What I want to get with for loop. Something will be like this.
*
**
***
****
*****
****
***
**
*
This thing I want to create right now I have this code.
<?php
$i = 1;
$end = 5;
$star = "*";
for($i; $i <= $end; $i++){
for($b=1; $b <= $i; $b++){
echo $star;
}
if($i == $end){
for($c=1; $c <= $end; $c++ ){
for($d=i; $d >= 2; $d--){
echo $star;
}
echo "<br>";
}
}
};
?>
And it's working fine with
*
**
***
****
*****
But then I need opposite loop first 4 then 3 then 2 then 1...
Where am I going wrong with this?
Just for fun. Try this:
$stars = 1;
for ($i = 0; $i < 9; $i++) {
for ($s = 1; $s <= $stars; $s++) {
echo "*";
}
echo "\n";
$stars += ($i<4)?1:-1;
}
And, for even more fun, one with just one for loop:
$stars = 0;
$starctr = 0;
for ($i = 0; $i < 25; $i++) {
echo "*";
if ($stars == $starctr) {
echo "\n";
$stars += ($i<14)?1:-1;
$starctr = 0;
} else {
$starctr++;
}
}
Can using nested for loop. Example:
$n = 5;
for($i = 1; $i <= $n; $i++){
for($j = 1; $j <= $i; $j++){
echo '*';
}
echo '<br />';
}
for($i = $n-1; $i >= 1; $i--){
for($j = $i; $j >= 1; $j--){
echo '*';
}
echo '<br />';
}
Another technique using array_fill(), array_map(), array_reverse()
$n = 5; $arr = array();
for($i = 1; $i <= $n; $i++){
$arr[] = array_fill(0, $i, '*');
}
array_map(function($v){echo join('', $v) . '</br>';},$arr);
unset($arr[count($arr) - 1]); //remove last index value
array_map(function($v){echo join('', $v) . '</br>';},array_reverse($arr));
<?php
for($i=0;$i<=6;$i++){
for($k=6;$k>=$i;$k--){
echo " ";
}
for($j=1;$j<=$i;$j++){
echo "* ";
}
echo "<br>";
}
for($i=5;$i>=1;$i--){
for($k=6;$k>=$i;$k--){
echo " ";
}
for($j=1;$j<=$i;$j++){
echo "* ";
}
echo "<br>";
}
?>
This can be achieved with only 2 for loops.
$offset = 1;
for ($i = 1; $i > 0; $i += $offset)
{
for($j = 1; $j <= $i; $j++){
echo '*';
}
echo '<br />';
if ($i === 5)
$offset = -1;
}
<?php
$i = 1;
$end = 5;
$star = "*";
for($i; $i <= $end; $i++){
for($b=1; $b <= $i; $b++){
echo $star;
}
};
for($c=$send; $c>=2; $c-- ){
for($d=$end; $d >= 2; $d--){
echo $star;
}
echo "<br>";
};
?>
Using a single for loop:
$end = 5;
$out = array();
for ($i=0;$i<$end;++$i)
{
$out[] = str_repeat('*', $i+1);
}
echo implode(PHP_EOL, $out).PHP_EOL;
array_pop($out);
$out = array_reverse($out);//remove last ****** <-- only one line with 5 stars
echo implode(PHP_EOL, $out).PHP_EOL;
Replace PHP_EOL with <br> if you want to, but this is the least loopy way to write this code I can think of
live demo
Here's a recursive attempt:
function ladder($n, $counter=1, &$acc=array())
{
if ($counter == ($n*2)) {
return implode($acc);
}
if ($counter <= $n) {
$acc[$counter] = str_repeat('*', $counter) . "\n";
$counter++;
}
if ($counter > $n) {
$diff = (int) $n-$counter;
$acc[$counter] = str_repeat('*', $n+$diff) . "\n";
$counter++;
}
return ladder($n, $counter, $acc);
}
print_r(ladder(5));