By using Regexes 🙂 var str = “Welcome to the world”; var parts = System.Text.RegularExpressions.Regex.Split(str, ” “); Array.Reverse(parts); var sb = new StringBuilder(); foreach (var part in parts) { sb.Append(part); sb.Append(‘ ‘); } if (sb.Length > 0) { sb.Length–; } var str2 = sb.ToString(); Note that Regex(es) aren’t part of the System.String class 🙂 🙂 … Read more
You can just split your text on space, removing punctuation along the way, and then iterate through the array and print the indices: String line = “hello, how are you?”; String[] words = line.replaceAll(“[^a-zA-Z ]”, “”).split(“\\s+”); for (int i=0; i < words.length; ++i) { System.out.print(words[i] + “:” + i + ” “); } Explanation: replaceAll(“[^a-zA-Z … Read more
Well, you could try: Example 1: Using REGEX public static void main(String[] args) { String text = “Hello worlld this is someething cool!”; //add # between all double letters String processingOfText = text.replaceAll(“(\\w)\\1”, “$1#$1”); System.out.println(processingOfText); } Example 2: Using string manipulations public static void main(String[] args) { String text = “Hello worlld this is someething … Read more
Use re.finditer: import re sentence = input(“Give me a sentence “) word = input(“What word would you like to find “) for match in re.finditer(word, sentence): print (match.start(), match.end()) For word = “this” and sentence = “this is a sentence this this” this will yield the output: (0, 4) (19, 23) (24, 28)
The equivalent is std::string or std::wstring declared in the <string> header file. Though you should note that python has probably different intrinsic behavior about handling automatic conversions to UNICODE strings, as mentioned in @Vincent Savard’s comment. To overcome these problems we use additional libraries in c++ like libiconv. It’s available for use on a broad … Read more
Your example input/output suggests that you are looking for a power set. You could generate a power set for a string using itertools module in Python: from itertools import chain, combinations def powerset(iterable): “powerset([1,2,3]) –> () (1,) (2,) (3,) (1,2) (1,3) (2,3) (1,2,3)” s = list(iterable) return chain.from_iterable(combinations(s, r) for r in range(len(s)+1)) print(list(map(”.join, powerset(‘abcd’)))) … Read more
You have to concat two substrings of the first string onto the ends of the second. // put the marble in the bag public static String insert(String bag, String marble, int index) { String bagBegin = bag.substring(0,index); String bagEnd = bag.substring(index); return bagBegin + marble + bagEnd; }
string is an alias in C# for System.String. So technically, there is no difference. It’s like int vs. System.Int32. As far as guidelines, it’s generally recommended to use string any time you’re referring to an object. e.g. string place = “world”; Likewise, I think it’s generally recommended to use String if you need to refer … Read more
ECMAScript 6 introduced String.prototype.includes: const string = “foo”; const substring = “oo”; console.log(string.includes(substring)); // true includes doesn’t have Internet Explorer support, though. In ECMAScript 5 or older environments, use String.prototype.indexOf, which returns -1 when a substring cannot be found: var string = “foo”; var substring = “oo”; console.log(string.indexOf(substring) !== -1); // true