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What would cause an algorithm to have O(log n) complexity?

... Also note that this is the most concise way to denote the number in this range. Any reduction will lead to information loss, as a missing digit can be mapped to 10 other numbers. For example: 12* can be mapped to 120, 121, 122, …, 129. 2. How do you search for a number in (0, N - 1)? Taking N ...
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Hex transparency in colors [duplicate]

...n be solved generically by a cross multiplication. We have a percentage (ranging from 0 to 100 ) and another number (ranging from 0 to 255) then converted to hexadecimal. 100 <==> 255 (FF in hexadecimal) 0 <==> 0 (00 in hexadecimal) For 1% 1 * 255 / 100 = 2,5 2,5 in hexa is 2 i...
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Adding values to a C# array

... try to access it's non existent indexes to set values, you'll get an OutOfRangeException as soon as you run the code. Arrays need to be initialized with the size you are going to use, they reserve all the space at the beginning, witch makes them very fast, but not possible for them to be resized. ...
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How to grant remote access to MySQL for a whole subnet?

... It appears you have to use the first IP address in the range; Using for example 192.168.0.34/255.255.255.0 will fail! – Sander Jun 1 '17 at 8:35 ...
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source of historical stock data [closed]

...h Time) l1 Last Trade (Price Only) l2 High Limit l3 Low Limit m Day's Range m2 Day's Range (Real-time) m3 50-day Moving Average m4 200-day Moving Average m5 Change From 200-day Moving Average m6 Percent Change From 200-day Moving Average m7 Change From 50-day Moving Average m8 Percent Ch...
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What is the best way to tell if a character is a letter or number in Java without using regexes?

...igit, then the best thing to do is to test by comparing with the character ranges 'a' to 'z', 'A' to 'Z' and '0' to '9'. Note that all ASCII letters / digits are Unicode letters / digits ... but there are many Unicode letters / digits characters that are not ASCII. For example, accented letters, ...
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How can I plot separate Pandas DataFrames as subplots?

... df6] fig, axes = plt.subplots(nrow, ncol) # plot counter count=0 for r in range(nrow): for c in range(ncol): df_list[count].plot(ax=axes[r,c]) count=+1 Using this code you can plot subplots in any configuration. You need to just define number of rows nrow and number of colum...
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How to remove all line breaks from a string

... to be a complaint. It does what I said: remove EVERYTHING not in that HEX range. What chars that are depends on the char set of course, but this post was about ASCII. – masi Jan 23 '19 at 23:11 ...
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How do I check if a string contains another string in Objective-C?

... NSString *string = @"hello bla bla"; if ([string rangeOfString:@"bla"].location == NSNotFound) { NSLog(@"string does not contain bla"); } else { NSLog(@"string contains bla!"); } The key is noticing that rangeOfString: returns an NSRange struct, and the documentation ...
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How to save a Python interactive session?

...ation states: This function uses the same syntax as %history for input ranges, then saves the lines to the filename you specify. This allows for example, to reference older sessions, such as %save current_session ~0/ %save previous_session ~1/ Look at the videos on the presentation page to ...