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java Programming Glossary: s.charatConvert a string representation of a hex dump to a byte array using Java? http://stackoverflow.com/questions/140131/convert-a-string-representation-of-a-hex-dump-to-a-byte-array-using-java len 2 for int i 0 i len i 2 data i 2 byte Character.digit s.charAt i 16 4 Character.digit s.charAt i 1 16 return data Reasons.. i 2 byte Character.digit s.charAt i 16 4 Character.digit s.charAt i 1 16 return data Reasons why it is an improvement Safe with..
What is the easiest/best/most correct way to iterate through the characters of a string in Java? http://stackoverflow.com/questions/196830/what-is-the-easiest-best-most-correct-way-to-iterate-through-the-characters-of-a String s ...stuff... for int i 0 i s.length i char c s.charAt i Process char That's what I would do. It seems the easiest..
Printing reverse of any String without using any predefined function? http://stackoverflow.com/questions/2612976/printing-reverse-of-any-string-without-using-any-predefined-function sb new StringBuilder for int i s.length 1 i 0 i sb.append s.charAt i return sb.toString Recursively static String reverseMe String.. String reverseMe String s if s.length 0 return return s.charAt s.length 1 reverseMe s.substring 0 s.length 1 share improve..
Checking if an int is prime more efficiently http://stackoverflow.com/questions/2777509/checking-if-an-int-is-prime-more-efficiently loop i String s i String r for int j s.length 1 j 0 j r r s.charAt j if prime i prime Long.parseLong r System.out.println i break..
http://stackoverflow.com/questions/3018683/what-does-assert-do int d assert d 0 d s.length if d s.length return 1 return s.charAt d java assert share improve this question From the Java..
How to use java.String.format? http://stackoverflow.com/questions/3695230/how-to-use-java-string-format if idx s.indexOf ' ' 1 char c idx s.length 2 ' ' s.charAt idx 1 throw new UnknownFormatConversionException String.valueOf..
Sum of the digits of the number 2^1000 [closed] http://stackoverflow.com/questions/377361/sum-of-the-digits-of-the-number-21000 i carry carry 0 if n 9 String s Integer.toString n carry s.charAt 0 48 result.add 0 s.charAt s.length 1 48 else result.add 0 n.. s Integer.toString n carry s.charAt 0 48 result.add 0 s.charAt s.length 1 48 else result.add 0 n if carry 0 result.add 0 carry..
XOR operation with two strings in java http://stackoverflow.com/questions/5126616/xor-operation-with-two-strings-in-java new StringBuilder for int i 0 i s.length i sb.append char s.charAt i ^ key.charAt i key.length String result sb.toString In response..
Determine if a String is an Integer in Java [duplicate] http://stackoverflow.com/questions/5439529/determine-if-a-string-is-an-integer-in-java if s.isEmpty return false for int i 0 i s.length i if i 0 s.charAt i ' ' if s.length 1 return false else continue if Character.digit.. s.length 1 return false else continue if Character.digit s.charAt i radix 0 return false return true A more expensive non exception..
counting frequency of characters in a string http://stackoverflow.com/questions/6712587/counting-frequency-of-characters-in-a-string Integer String s aasjjikkk for int i 0 i s.length i char c s.charAt i Integer val map.get new Character c if val null map.put c..
Swing method akin to HTML5's canvas.putImageData(arrayOfPixels, 0,0) http://stackoverflow.com/questions/7297950/swing-method-akin-to-html5s-canvas-putimagedataarrayofpixels-0-0 for int i 0 i s.length i pi.add s.charAt i '0' for int i 0 i 10 i clut.add Color.getHSBColor 0.6f i..
AES encrypt with openssl command line tool, and decrypt in Java http://stackoverflow.com/questions/8343894/aes-encrypt-with-openssl-command-line-tool-and-decrypt-in-java len 2 for int i 0 i len i 2 data i 2 byte Character.digit s.charAt i 16 4 Character.digit s.charAt i 1 16 return data 33.. i 2 byte Character.digit s.charAt i 16 4 Character.digit s.charAt i 1 16 return data 33 1 71 When I run the Java code it..
Whats the best way to recursively reverse a string in Java? http://stackoverflow.com/questions/859562/whats-the-best-way-to-recursively-reverse-a-string-in-java recursion public String reverseString String s char c s.charAt s.length 1 if s.length 1 return Character.toString c return..
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