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關(guān)于隨機(jī)字符串的生成

這里只有隨機(jī)生成十位長(zhǎng)度為1-10的字符串，打印輸出沒(méi)寫(xiě)

Random random = new Random();

List<String> list = new ArrayList<String>();

String string = "0123456789qwertyuioplkjhgfdsazxcvbnm0123456789QWERTYUIOPLKJHGFDASZXCVBNM";

for (int i = 0; i < 10; i++) {

int length = (int) (Math.random() * 10 + 1);

StringBuilder sb = new StringBuilder();

for (int j = 0; j < length; j++) {

do {

char str = string.charAt(random.nextInt(string.length()));

sb.append(str);

} while (list.contains(sb));

}

list.add(sb.toString());

}

FateForever

2016-07-12

源自：Java入門(mén)第三季 6-5

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2 回答

Kuuuuuuuo
2016-07-21

Random?random?=?new?Random();
List<String>?list?=?new?ArrayList<String>();
String?string?=?"0123456789qwertyuioplkjhgfdsazxcvbnm0123456789QWERTYUIOPLKJHGFDASZXCVBNM";
for?(int?i?=?0;?i?<?10;?i++)?{
????int?length?=?(int)?(Math.random()?*?10?+?1);
????StringBuilder?sb?=?new?StringBuilder();
????
????for?(int?j?=?0;?j?<?length;?j++)?{
????????char?str?=?string.charAt(random.nextInt(string.length()));
????????sb.append(str);
????}
????list.add(sb.toString());
}