A Long object that represents the value of the second argument is returned if there is no property of the specified name, if the property does not have the correct numeric format, or if the specified name is em
public static Long decode(String nm) throws NumberFormatException {int radix = 10;int index = 0;boolean negative = false;Long result;if (nm.length() == 0)throw new NumberFormatException("Zero length string");//空串,抛异常char firstChar = nm.charAt(0);//取出首字符,需要判断正负呀^_^//...
答案是有时相等有时不相等,如下 Longa=Long.valueOf("1");Longb=Long.valueOf("1");Longc=newLong("1");Longd=Long.valueOf("129");Longe=Long.valueOf("129");System.out.println(a==b);//trueSystem.out.println(a==c);//falseSystem.out.println(d==e);//false 这也是我进阿里一面的面...
static int formatUnsignedLong(long val, int shift, char[] buf, int offset, int len) { int charPos = len; int radix = 1 int mask = radix - 1;//2进制1,8进制0111,16进制1111 do { //很棒的技巧! buf[offset + --charPos] = Integer.digits[((int) val) & mask];//通过与mask进行...
{ // Integer.MAX_VALUE in base 10 is 10 digits return parseInt(s, radix); //调用parseInt方法 } else { long ell = Long.parseLong(s, radix); if ((ell & 0xffff_ffff_0000_0000L) == 0) { return (int) ell; } else { throw new NumberFormatException(String.format("String value %s ...
signed long int or long int:The size of these datatypes is 4 bytes and its range is(-231)to(231-1).The format specifier is used for long int are %ld and %li. unsigned long int:The size of these datatypes is also 4 bytes and its range is0to(232-1).The format specifier is used...
A Long object that represents the value of the second argument is returned if there is no property of the specified name, if the property does not have the correct numeric format, or if the specified name is empty or null. In other words, this method returns a Long object equal to ...
62. BigInteger.Parse Method (String, NumberStyles, IFormatProvider) 63. Call parse with default values of style and provider supporting tilde as negative sign 64. Call parse with only AllowLeadingWhite and AllowTrailingWhite 65. Call parse with only AllowHexSpecifier 66. Call parse with on...
undefined", "type specifier expected", "too many nested functioncalls", "return without call", "parentheses expected, "while expected", "closing quoto expected", "nota string", "too many} "%s,eerror) pp_bufwhile(!=prog {p++ if(*p='r') line printf"in %d\...
static int formatUnsignedLong(long val, int shift, char[] buf, int offset, int len) { int charPos = len; //核心的地方shift决定进制类型 int radix = 1 << shift; int mask = radix - 1; do { //由于offset=0,所以可以理解成[buf--charPos] ...