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How do I ignore files in a directory in Git?
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edited May 2 '17 at 5:14
Brian Webster
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How to use GROUP_CONCAT in a CONCAT in MySQL
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ashleedawg
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answered Nov 19 '12 at 10:33
SamiSami
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Why .NET String is immutable? [duplicate]
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241
Instances of immutable types are inherently thread-safe, since no thread can modify it, the ri...
Calling a function from a string in C#
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edited Feb 12 '09 at 4:59
answered Feb 12 '09 at 4:53
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When you exit a C application, is the malloc-ed memory automatically freed?
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answered Feb 6 '10 at 15:40
YacobyYacoby
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How to Deserialize XML document
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edited Apr 9 at 20:48
Selim Yildiz
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answer...
Does Typescript support the ?. operator? (And, what's it called?)
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14 Answers
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How do I format a number in Java?
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From this thread, there are different ways to do this:
double r = 5.1234;
System.out.println(r); // r is 5.1234
int decimalPlaces = 2;
BigDecimal bd = new BigDecimal(r);
// setScale is immutable
bd = bd.setScale(decimalPlaces, BigDecimal.ROUND_HALF_UP);
r = bd.doubleValue();
System.out.printl...
Given a number, find the next higher number which has the exact same set of digits as the original n
...in the correct place in O(n)).
An example will make this more clear:
123456784987654321
start with a number
123456784 987654321
^the first place from the right where the left-digit is less than the right
Digit "x" is 4
123456784 987654321
^find the smallest dig...