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摘要： Read an input text from the console and print the number of words. By word we mean a sequence of characters separated by one or several spaces. If the 阅读全文

摘要： Imagine that we have a typing machine that accepts only one letter at a time for writing, but we want to write an array of words instead. public class 阅读全文

摘要： Write a program searching for passwords in a given text. It is known that: a password consists of digits and Latin upper- and lowercase letters; a pas 阅读全文

摘要： For a given string you should remove all HTML tags from it. An HTML tag starts with the symbol "<" and ends with the symbol ">". You should output the 阅读全文

摘要： The first line of the input contains a sequence of letters. The second line of the input contains some text. Your task is to determine if any of these 阅读全文

摘要： An IP address consists of four numbers from 0 to 255, inclusive, divided by the dots. For example, 127.0.0.1 is a valid IP address, but 256.0.0.1 and 阅读全文

摘要： Earlier, we defined edit distance as the minimal number of insertions, deletions and substitutions required to transform one string into another. But 阅读全文

摘要： Write a program that reads several descending sorted sequences of ints and merges them into one sequence. The merged sequence should be also sorted in 阅读全文

摘要： Implement a method to find the second largest number in an array of ints. If the input array is empty or contains only a single number, the method mus 阅读全文

摘要： Implement a method that finds the index of the K-th element equal to the minimum in an array of ints. If no such element can be found, return -1. The 阅读全文