{"id":279626,"date":"2021-01-09T05:45:42","date_gmt":"2021-01-08T21:45:42","guid":{"rendered":"http:\/\/4563.org\/?p=279626"},"modified":"2021-01-09T05:45:42","modified_gmt":"2021-01-08T21:45:42","slug":"java-%e5%b0%8f%e6%95%b0%e8%bd%ac-36-%e8%bf%9b%e5%88%b6","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=279626","title":{"rendered":"Java \u5c0f\u6570\u8f6c 36 \u8fdb\u5236"},"content":{"rendered":"
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Java \u5c0f\u6570\u8f6c 36 \u8fdb\u5236 <\/h1>\n

<\/p>\n

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\u8cc7\u6df1\u5927\u4f6c : douleL <\/span> <\/i> 4<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

java \u5c0f\u6570\u5982 Math.random()\u8f6c 36 \u8fdb\u5236,\u6c42\u4e2a\u65b9\u6cd5<\/p>\n<\/p><\/div>\n

\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (15<\/span>) <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : crclz <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6574\u6570\u90e8\u5206\u5c31\u662f\u6a21 K \u53d6\u4f59\uff08 K \u662f\u8fdb\u5236\uff09\u3002
    \u5c0f\u6570\u90e8\u5206\u4e0d\u4e00\u5b9a\u80fd\u591f\u7cbe\u786e\u8f6c\u6362\u3002
    \u5c0f\u6570\u90e8\u5206\u9996\u5148\u786e\u5b9a\u4f60\u60f3\u8981\u7684\u5c0f\u6570\u4f4d\u6570 n\uff0c\u7136\u540e\u5c0f\u6570\u90e8\u5206 tmp=\u5c0f\u6570\u90e8\u5206*(K^n)\uff0cn \u4e3a\u7cbe\u5ea6\u3002\u7136\u540e\u622a\u65ad tmp=(int)tmp \u3002\u7136\u540e\u628a tmp \u8f6c\u6362\u4e3a K \u8fdb\u5236\u6570\uff0c\u6700\u540e\u79fb\u52a8 n \u4f4d\u5c0f\u6570\u70b9\u3002<\/p>\n

    \u4ee5\u4e0a\u662f\u6211\u51ed\u501f\u6709\u9650\u7684\u77e5\u8bc6\u60f3\u51fa\u6765\u7684\uff0c\u5177\u4f53\u7684\u4e13\u95e8\u7684\u8fdb\u5236\u8f6c\u6362\u8981\u5177\u4f53\u53bb\u67e5\u4e13\u95e8\u7684\u5e16\u5b50\u6216\u8005\u89e3\u51b3\u65b9\u6848\u3002 <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : douleL <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6211\u662f\u60f3\u7528 java \u4ee3\u7801\u6a21\u62df js \u7684 \uff1aMath.random().toString(36) <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : AoEiuV020 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @douleL \u5efa\u8bae\u88c5\u4e2a js \u5f15\u64ce\u76f4\u63a5\u8dd1 js \u4ee3\u7801\uff0c <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : douleL <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @AoEiuV020 \u6211\u662f\u8fd9\u4e48\u5e72\u4e86 \u4f46\u662f\u6d4b\u8bd5\u4e86\u4e0b \u6027\u80fd\u8017\u65f6\u6709\u70b9\u9ad8 \u6240\u4ee5\u624d\u60f3 java \u4ee3\u7801\u66ff\u4ee3\u7684 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : ysc3839 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u53bb\u627e\u4e00\u4e9b\u5d4c\u5165\u5f0f\u7684\u5f88\u7b80\u5355\u7684 js \u5f15\u64ce\uff0c\u770b toString \u7684\u5b9e\u73b0\u5427\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : Xusually <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    Math.random()\u51fa\u6765\u7684\u5c0f\u6570\uff0c\u62c6\u5206\u6210\u6574\u6570\u90e8\u5206\u548c\u5c0f\u6570\u90e8\u5206\u5206\u522b\u7528
    Integer.toString(i, 36)
    \u8f93\u51fa <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : Xusually <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @Xusually emmm….\u5c0f\u6570\u90e8\u5206\u6709\u70b9\u95ee\u9898\uff0c\u5f97\u60f3\u60f3\uff0c\u5509\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : AoEiuV020 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @douleL \u7b80\u5355\u5199\u4e86\u4e00\u6bb5\u8bd5\u4e86\u4e0b\u4e86 js \u80fd\u5bf9\u5e94\u4e0a\uff0c\u4f46\u662f\u7cbe\u5ea6\u662f\u4e2a\u5927\u95ee\u9898\uff0c\u65e0\u6cd5\u6a21\u62df js \u7684\u7cbe\u5ea6\u4e22\u5931\uff0c\u611f\u89c9 java \u7684 double \u7cbe\u5ea6\u6bd4 js \u5c0f\uff0cbigDecimal \u7cbe\u5ea6\u53c8\u592a\u5927\uff0c
    @Test
    public void testRadix() {
    assertEquals(“0.o72tt3lcjtq”, toString(“0.6721285152844136”, 36));
    }
    public String toString(String number, int radix) {
    BigDecimal N = new BigDecimal(number);<\/p>\n

    StringBuilder sb = new StringBuilder();
    BigInteger i = N.toBigInteger();
    sb.append(i.toString(radix));
    sb.append(‘.’);
    while(new BigDecimal(N.intValue()).compareTo(N) != 0 && sb.length() < 13) {
    N = N.multiply(new BigDecimal(radix));
    i = N.toBigInteger().mod(new BigDecimal(radix).toBigInteger());
    sb.append(i.toString(radix));
    }
    return sb.toString();
    } <\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : AoEiuV020 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    v2ex \u600e\u4e48\u53d1\u4ee3\u7801\u6765\u7740\uff0c
    “`java
    @Test
    public void testRadix() {
    assertEquals(“0.o72tt3lcjtq”, toString(“0.6721285152844136”, 36));
    }
    public String toString(String number, int radix) {
    BigDecimal N = new BigDecimal(number);<\/p>\n

    StringBuilder sb = new StringBuilder();
    BigInteger i = N.toBigInteger();
    sb.append(i.toString(radix));
    sb.append(‘.’);
    while(new BigDecimal(N.intValue()).compareTo(N) != 0 && sb.length() < 13) {
    N = N.multiply(new BigDecimal(radix));
    i = N.toBigInteger().mod(new BigDecimal(radix).toBigInteger());
    sb.append(i.toString(radix));
    }
    return sb.toString();
    }
    “` <\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : AoEiuV020 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    “`
    @Test
    public void testRadix() {
    assertEquals(“0.o72tt3lcjtq”, toString(“0.6721285152844136”, 36));
    }
    public String toString(String number, int radix) {
    BigDecimal N = new BigDecimal(number);<\/p>\n

    StringBuilder sb = new StringBuilder();
    BigInteger i = N.toBigInteger();
    sb.append(i.toString(radix));
    sb.append(‘.’);
    while(new BigDecimal(N.intValue()).compareTo(N) != 0 && sb.length() < 13) {
    N = N.multiply(new BigDecimal(radix));
    i = N.toBigInteger().mod(new BigDecimal(radix).toBigInteger());
    sb.append(i.toString(radix));
    }
    return sb.toString();
    }
    “` <\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : AoEiuV020 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    https:\/\/gist.github.com\/AoEiuV020\/be724846107b6522164e3dee9478428a