Description: Given a string, find the first non-repeating character in it andreturn its index. If it doesn't exist, return -1.Example 1input: "leetcode"output: 0Example 2input: "loveleetcode"output: 2The solution we are targeting here is a linear time solution since we have to goover the entire string to know which one is unique in it. A straightforwardmethod we can easily think of is having a Dictionary record letter frequency.Subsequently, iterate over the input again and return the index that has aletter frequency of 1.

Answered: Image /qna-images/answer/e84334dc-2e09-4088-9fc1-e6389cbd482e.jpg

Answered: Description: Given a string, find the…

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

See similar textbooks

Similar questions

Static Length, Limited Dynamic Length, and Dynamic Length String implementations have what advantages and disadvantages?
StringBuilder objects should be used in place of String objects if O is more than 80 characters long. the string may grow. O the string is declared final. O the tring needs to be initialized.
Counting hashtags Write Python code to count the frequency of hashtags in a twitter feed. Your code assumes a twitter feed variable tweets exists, which is a list of strings containing tweets. Each element of this list is a single tweet, stored as a string. For example, tweets may look like: tweets = ["Happy #IlliniFriday!", "It is a pretty campus, isn't it, #illini?", "Diving into the last weekend of winter break like... #ILLINI #JoinTheFight", "Are you wearing your Orange and Blue today, #Illini Nation?"] Your code should produce a sorted list of tuples stored in hashtag_counts, where each tuple looks like (hashtag, count), hashtag is a string and count is an integer. The list should be sorted by count in descending order, and if there are hashtags with identical counts, these should be sorted alphabetically, in ascending order, by hashtag. From the above example, our unsorted hashtag_counts might look like: [('#illini', 2), ('#jointhefight', 1),…
Scala Programming: Given string str, write a Scala program to create a new string where "Scala " is added to the front of a given string. If the string already begins with "Scala", return the string unchanged. Otherwise, return the string after adding "Scala ". Test the function for two strings "Scala Programming" and "Programming" inside the main method.
JAVA PPROGRAM ASAP Please create this program ASAP BECAUSE IT IS MY LAB ASSIGNMENT so it passes all the test cases. The program must pass the test case when uploaded to Hypergrade. Chapter 9. PC #2. Word Counter (page 608) Write a method that accepts a String object as an argument and returns the number of words it contains. For instance, if the argument is “Four score and seven years ago” the method should return the number 6. Demonstrate the method in a program that asks the user to input a string and then passes it to the method. The number of words in the string should be displayed on the screen. Test Case 1 Please enter a string or type QUIT to exit:\nHello World!ENTERThere are 2 words in that string.\nPlease enter a string or type QUIT to exit:\nI have a dream.ENTERThere are 4 words in that string.\nPlease enter a string or type QUIT to exit:\nJava is great.ENTERThere are 3 words in that string.\nPlease enter a string or type QUIT to exit:\nquitENTER
JAVA PROGRAM ASAP Please CREATE A program ASAP BECAUSE IT IS LAB ASSIGNMENT so it passes all the test cases. The program must pass the test case when uploaded to Hypergrade. Chapter 9. PC #16. Morse Code Converter Morse code is a code where each letter of the English alphabet, each digit, and various punctuation characters are represented by a series of dots and dashes. Write a program that asks the user to enter a string, and then converts that string to Morse code and prints on the screen. Use hyphens for dashes and periods for dots. The Morse code table is given in a text file morse.txt. When printing morse code, display eight codes on each line except the last line. Codes should be separated from each other with one space. There should be no extra spaces at the beginning and at the end of the output. Uppercase and lowercase letters are translated the same way. Morse.txt 0 -----1 .----2 ..---3 ...--4 ....-5 .....6 -....7 --...8 ---..9 ----.,…
Exercise2: Thestrcmp(string1,string2)function comparesstring1to string2. It is a value returning function that returns a negative integer if string1 < string2, 0 if string1 == string2, and a positive integer if string1 > string2. Write a program that reads two names (last name first followed by a comma followed by the first name) and then prints them in alphabetical order. The two names should be stored in separate character arrays holding a maximum of 25 characters each. Use the strcmp() func- tion to make the comparison of the two names. Remember that 'a' < 'b', 'b' < 'c', etc. Be sure to include the proper header file to use strcmp(). Sample Run 1: Please input the first name Brown, George Please input the second name Adams, Sally The names are as follows: Adams, SallyBrown, George Sample Run 2: Please input the first name Brown, George Please input the second name Brown, George The names are as follows: Brown, GeorgeBrown, GeorgeThe names are the same
python programing： You are going to create a race class, and inside that class it has a list of entrants to the race. You are going to create the daily schedule of three or so races and populate the races with the jockey/horse entries and then print out the schedule. Create a race class that has The name of the race as a character string, ie “RACE 1” or “RACE 2”, The time of the race A list of entries for that race Create a list of of 3 (or 4) of those race objects(races) for the day For the list of entries for a particular race, make a entrant class (the building block of your entrants list) you should have The horse name The jockey name Now you need to Populate the structure (ie set up three races on the schedule, add 2-3 horses entries to each race. You can hardcode the entries if you want to, rather than getting them from the user, just to save the time of making a menu interface and whatnot. Be able to print the days schedule So example output would be…

Recommended textbooks for you

Computer Networking: A Top-Down Approach (7th Edi…

Computer Engineering

ISBN:

9780133594140

Author:

James Kurose, Keith Ross

Publisher:

PEARSON

Computer Organization and Design MIPS Edition, Fi…

Computer Engineering

ISBN:

9780124077263

Author:

David A. Patterson, John L. Hennessy

Publisher:

Elsevier Science

Network+ Guide to Networks (MindTap Course List)

Computer Engineering

ISBN:

9781337569330

Author:

Jill West, Tamara Dean, Jean Andrews

Publisher:

Cengage Learning

Computer Networking: A Top-Down Approach (7th Edi…

Computer Engineering

ISBN:

9780133594140

Author:

James Kurose, Keith Ross

Publisher:

PEARSON

Computer Organization and Design MIPS Edition, Fi…

Computer Engineering

ISBN:

9780124077263

Author:

David A. Patterson, John L. Hennessy

Publisher:

Elsevier Science

Network+ Guide to Networks (MindTap Course List)

Computer Engineering

ISBN:

9781337569330

Author:

Jill West, Tamara Dean, Jean Andrews

Publisher:

Cengage Learning

Concepts of Database Management

Computer Engineering

ISBN:

9781337093422

Author:

Joy L. Starks, Philip J. Pratt, Mary Z. Last

Publisher:

Cengage Learning

Prelude to Programming

Computer Engineering

ISBN:

9780133750423

Author:

VENIT, Stewart

Publisher:

Pearson Education

Sc Business Data Communications and Networking, T…

Computer Engineering

ISBN:

9781119368830

Author:

FITZGERALD

Publisher:

WILEY

SEE MORE TEXTBOOKS

Description: Given a string, find the first non-repeating character in it and return its index. If it doesn't exist, return -1.