字符串函数:
= "fakeface" =(,0,3); = (); = ( = (,"c"); ; View Code
数学函数:
<span 1</span> <span $num</span> = 123.123456<span ; </span><span 2</span> <span print</span> <span round</span>(<span $num</span>);<span //</span><span 输出一个整数123</span> <span 3</span> <span print</span> <span round</span>(<span $num</span>,3);<span //</span><span 输出数字并保留三位小数123.123</span> <span 4</span> <span rand</span>(1,10);<span //</span><span 在1,10随机生成一个数字</span>
数组函数:
<span 1</span> <span $fav_bands</span> = <span array</span><span (); </span><span 2</span> <span array_push</span>(<span $fav_bands</span>, "Maroon 5");<span //</span><span 给数组添加元素</span> <span 3</span> <span array_push</span>(<span $fav_bands</span>, "Bruno Mars"<span ); </span><span 4</span> <span array_push</span>(<span $fav_bands</span>, "Nickelback"<span ); </span><span 5</span> <span array_push</span>(<span $fav_bands</span>, "Katy Perry"<span ); </span><span 6</span> <span array_push</span>(<span $fav_bands</span>, "Macklemore"<span ); </span><span 7</span> <span print</span> <span count</span>(<span $fav_bands</span><span ); 查看数组有多少元素 </span><span 8</span> <span 9</span> <span 10</span> <span $names</span> = <span array</span>("david","alana","violet","rory"<span ); </span><span 11</span> <span sort</span>(<span $names</span>);<span //</span><span array("alana","david","rory","violet")</span> <span 12</span> <span print</span> <span join</span>(", ", <span $names</span>);<span //</span><span prints alana, david, rory, violet</span> <span 13</span> <span rsort</span>(<span $names</span>); <span //</span><span array("violet","rory","david","alana")</span>
陳述
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