如何打印此图案?
$number = 5;
for ($i=1; $i <= $number ; $i++) {
for ($j=$i; $j >= 1;$j--){
echo "0";
}
echo "\n";
}
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0
00
000
0000
00000
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我试过这样,但我很困惑打印星号和零字符
0
00
000
0000
00000
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1 => 1
2 => 3
3 => 6
4 => 10
5 => 15
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