update: 优化质数代码
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@ -371,9 +371,10 @@ i的值:9
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//console.log(i);
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//判断num是否能被i整除
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if (num % i == 0) {
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//如果num能被i整除,则说明num一定不是质数
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//设置flag为false
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//一旦发现:如果num能被i整除,则说明num一定不是质数,
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//此时:设置flag为false,然后跳出 for 循环
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flag = false;
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break;
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}
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}
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