The idea: Iterate through all the elements and set the value of each element as the cumulative frequency thus far. Generate a random number between 1 and the sum of all frequencies Do a binary search on the values for this number (finding the first value greater than or equal to the number). Example: Element … Read more
Property Set is for objects (e.g., class instances) Property Let is for “normal” datatypes (e.g., string, boolean, long, etc.)
Only because no one else has mentioned it: >>> ‘bob’.title() ‘Bob’ >>> ‘sandy’.title() ‘Sandy’ >>> ‘1bob’.title() ‘1Bob’ >>> ‘1sandy’.title() ‘1Sandy’ However, this would also give >>> ‘1bob sandy’.title() ‘1Bob Sandy’ >>> ‘1JoeBob’.title() ‘1Joebob’ i.e. it doesn’t just capitalize the first alphabetic character. But then .capitalize() has the same issue, at least in that ‘joe Bob’.capitalize() … Read more
Character.isDigit(string.charAt(index)) (JavaDoc) will return true if it’s a digit Character.isLetter(string.charAt(index)) (JavaDoc) will return true if it’s a letter
To check if a character is lower case, use the islower method of str. This simple imperative program prints all the lowercase letters in your string: for c in s: if c.islower(): print c Note that in Python 3 you should use print(c) instead of print c. Possibly ending up with assigning those letters to … Read more
+1 for word boundaries, and here is a comparable Javascript solution. This accounts for possessives, as well: var re = /(\b[a-z](?!\s))/g; var s = “fort collins, croton-on-hudson, harper’s ferry, coeur d’alene, o’fallon”; s = s.replace(re, function(x){return x.toUpperCase();}); console.log(s); // “Fort Collins, Croton-On-Hudson, Harper’s Ferry, Coeur D’Alene, O’Fallon”
Since dart version 2.6, dart supports extensions: extension StringExtension on String { String capitalize() { return “${this[0].toUpperCase()}${this.substring(1).toLowerCase()}”; } } So you can just call your extension like this: import “string_extension.dart”; var someCapitalizedString = “someString”.capitalize();
I don’t believe there is a built-in function for that. But it’s easy enough to write with a regex function isLetter(str) { return str.length === 1 && str.match(/[a-z]/i); }
How do I make the first letter of a string uppercase in JavaScript?