Generating Unique Random Numbers Using Java

When you generate random numbers its often the case that each generated number number must be unique. A good example is picking lottery numbers. Each number picked randomly from a range (e.g., 1 to 40) must be unique, otherwise, the lottery draw would be invalid. Using a Collection The easiest way to pick unique random numbers is to put the range of numbers into a collection called an ArrayList. If youve not come across an ArrayList before, its a way of storing a set of elements that dont have a fixed number. The elements are objects that can be added to or removed from the list. For example, lets make the lottery number picker. It needs to pick unique numbers from a range of 1 to 40. First, put the numbers into an ArrayList using the add() method. It takes the object to be added as a parameter: import java.util.ArrayList;public class Lottery { public static void main(String[] args) { //define ArrayList to hold Integer objects ArrayList numbers new ArrayList(); for(int i 0; i 40; i) { numbers.add(i1); } System.out.println(numbers); }} Note that we are using the Integer wrapper class for the element type so that the ArrayList contains objects and not primitive data types. The output shows the range of numbers from 1 to 40 in order: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40] Using the Collections Class A utility class called Collections offers different actions that can be performed on a collection like an ArrayList (e.g., search the elements, find the maximum or minimum element, reverse the order of elements, and so on). One of the actions it can perform is to shuffle the elements. The shuffle will randomly move each element to a different position in the list. It does this by using a Random object. This means its a deterministic randomness, but it will do in most situations. To shuffle the ArrayList, add the Collections import to the top of the program and then use the Shuffle static method. It takes the ArrayList to be shuffled as a parameter: import java.util.Collections;import java.util.ArrayList;public class Lottery {public static void main(String[] args) {//define ArrayList to hold Integer objectsArrayList numbers new ArrayList();for(int i 0; i 40; i){numbers.add(i1);}Collections.shuffle(numbers);System.out.println(numbers);}} Now the output will show the elements in the ArrayList in a random order: [24, 30, 20, 15, 25, 1, 8, 7, 37, 16, 21, 2, 12, 22, 34, 33, 14, 38, 39, 18, 36, 28, 17, 4, 32, 13, 40, 35, 6, 5, 11, 31, 26, 27, 23, 29, 19, 10, 3, 9] Picking the Unique Numbers To pick the unique random numbers simply read the ArrayList elements one by one by using the get() method. It takes the position of the element in the ArrayList as a parameter. For example, if the lottery program needs to pick six numbers from the range of 1 to 40: import java.util.Collections;import java.util.ArrayList;public class Lottery {public static void main(String[] args) {//define ArrayList to hold Integer objectsArrayList numbers new ArrayList();for(int i 0; i 40; i){numbers.add(i1);}Collections.shuffle(numbers);System.out.print(This weeks lottery numbers are: );for(int j 0; j 6; j){System.out.print(numbers.get(j) );}}} The output being: This weeks lottery numbers are: 6 38 7 36 1 18

Baseball Is One Of America s Greatest Pastimes And The...

Baseball is one of America’s greatest pastimes and an iconic game that captures the imaginations of all age groups. Today, baseball is one of the most popular sports in the world and the aura of the game brings people together from many diverse backgrounds across the globe. There are many different elements that bring fans to the ballpark to watch their favorite teams and many of these elements are not directly correlated with the on-field action of the game. The atmosphere at a baseball game is fun, relaxing, and enjoyable because of the numerous attractions especially in the new modern ballparks across America. There is the food attraction which has become a staple across American dining cuisine simply know as ballpark food.†¦show more content†¦Major League Baseball continues to adapt to the ever changing technological landscape as the fan’s attention span gets shorter the more and more options teams have to present in terms of connect ability and entert ainment. â€Å"One common explanation is that in an age of ever increasing speed and shrinking attention spans, the pace of baseball games is just too slow† (Taylor). The attempt to link technology to a Major League fan to the live action is what top baseball executives are determined to achieve while gaining critical customer relationship management data. CRM generates an organization’s sales leads, marketing targets, and many other important tools utilized throughout the business processes. â€Å"Nowadays, fans can buy their tickets on an MLB team’s website, follow the tweets of players, â€Å"like† behind-the-scenes photos a team posts on Facebook, comment on a manager’s moves on team-supervised blogs and get updates on open seats, new merchandise and weather for the first pitch. In turn, teams hope that by communicating through social media outlets, they can better know their fans and build a loyal customer base, win or lose† (McKeon).

Revenge of the Spaniards free essay sample

Analysis of Bernal Diazs The Conquest of New Spain. This paper presents an in-depth analysis of Bernal Diazs The Conquest of New Spain. The paper examines the shroud of mystery surrounding the details of Montezumas death and, by utilizing the opinions of David Boruchoff and the actual text of Diazs book, this paper briefly highlighting the key points that Diaz makes in his retelling of Montezumas unfortunate murder. The paper then brings to light the rational faults and discrepancies within the original text and counters these apparent errors, by applying common sense and general knowledge of the era. The readable report, a concept from Joseph Conrads Heart of Darkness, is easily applicable to Bernal Diazs The Conquest of New Spain. The aforementioned readable report, in a general sense, indicates that the retelling of a situation or event is portrayed in a manner that benefits the teller even if distortion of the truth is required. We will write a custom essay sample on Revenge of the Spaniards or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Diaz, in his account of Montezumas death, makes the Spanish appear blameless and seemingly innocent of Montezumas blood. Throughout the sequence of events leading up to Montezumas death, there are constant indictments of the Mexicans causing the death of their own leader.

My Love, My Log free essay sample

Im that person who writes a 248 word essay when the prompt allows me to write up to 250 words, sorry admissions officers. I have this strange need to write, its like a drug, I have withdrawals. A piece of paper almost seduces me, sitting there tempting me with its horrendously magnificent blank stare. A lot of people ask me what I write. I write everything. Anything you could conjure up in your mind, I have written about it. I can be serious and write a direct stream of consciousness. It usually ends up reading like a typical teenage brain: rebelling, provoking, questioning. Although writers are stereotypically very serious about their work, I can be the outlier at times. For example, I have a poop log that I write in. Which basically means that, yes, I can be immature at times and, yes, poop logs do exist. I can go from writing responses to Nietzsches philosophies to rating a bathroom session on a 1-10 scale. We will write a custom essay sample on My Love, My Log or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Basically, my writing represents me entirely, humorous and thoughtful. Please dont misunderstand, I take myself very seriously, and I would be lost if my thoughts decided to stop plaguing my mind. But, at the same time laughing is the foot that kicks me out of bed every morning. If you can make me laugh until I cant breathe, then youre my friend. Writing is my niche, my love, and my passion. Let me be Jean Paul Sartre and let me be Spongebob Squarepants!

Comparing and Contrasting Picasso and Escher essays

Comparing and Contrasting Picasso and Escher essays All modern artists are the same, right? Wrong. The two artists I will be discussing, Pablo Picasso and M.C. Escher, though they have some similarities, are also very different. Though they are from the same general era, the tone of their artwork, their drawing styles, and some of the types of media they used. Both artists have similarities, though their differences are more numerous. Both artists are from the modern art period, meaning their art was done in the last century or so. Their art is also abstract, at least in the very general sense of the word. Hidden meanings also seem to abound in each artists' works. Then there is the first major difference, which is the tone of the pieces. Pablo Picasso's work is often very emotional. When you look at a Picasso, you often get the impression of what the artist was feeling at the time that the art was created. In his paintings, he often uses different colors (both hot and cool) to express emotions. The tone of Escher's works, however, is somewhat different. His are very mathematical. They feature, for instance, tessellations, optical illusions, and impossible figures. M.C. Escher also seems to like to draw houses, having many pieces of artwork featuring houses of all dimensions and shapes. Even though Escher's works are mathematical, he manages to keep them interesting. Top halves of houses turn into a network of upside down staircases and rooms, and in one particular tessellation a lizard is crawling its way out of the pattern. Though their styles are both generally abstract, there are many aspects of their styles that are not the same. Picasso's style, for instance, is very imprecise. The bodies of the people or objects he paints (or sculpts) are generally out of proportion - without detracting from the general sense of balance in the piece. Some, however, don't so much seem balanced, more like...rightfully unbalanced, if you catch my meaning. Also another observation is that Pica...

Free Essays on My Rules For Success

and meaning coming from all t... Free Essays on My Rules For Success Free Essays on My Rules For Success The Rules of Success Everyone know the three rules of real estate. location, location, location! In business the three rules of success are: communication, communication, communication! 1. Communication with employees 2. Communication with executive team 3. Communication with customers Every chapter of this book is built on this basic need to communicate. A business needs to communicate all aspects of its business to all of the participating members. Communicating with employees is the most difficult aspect of most organizations. The common feeling is, we hire them, they do what we want. To a point. Sometimes you don't know what you want, or maybe what you want is not really the best thing for the business. You must begin to encourage, support, and embrace communication with, to, and from your employees, who have the greatest knowledge of what is really happening. When you listen to the employees you will learn more than you ever imagined. When you listen, and when you communicate your understanding of what they have told you, they will see that they are recognized as valuable partners in the business. Your simple act of listening and communicating back to your employees will bring you more highly motivated employees as well as employees who will begin to think more creatively and more strategically. Communicating with your executive team is critical for ensuring that they articulate and communicate the company's message and values to the employees. It is with your executive team that you develop your communication strategies and policy statements. When you clearly communicate your vision to your executive team and when they are able to understand and espouse your message, you are well on your way to a successful company. Now that your entire team shares a common language the team can and will speak with one voice. It is very important for customers and for all employees to hear the same words and meaning coming from all t...

Training And Development Manual For Happy Wine Miami Term Paper

Training And Development Manual For Happy Wine Miami - Term Paper Example In this similar concern, this particular research study entails training needs assessment of Happy Wine. Training needs assessment will be based on the assessment of management skills and its effectiveness. Especially mentioning, this frames an important part of any organization as it encompasses various critical activities with regard to training as well as development function. In order to plan, prepare and implement advanced and effective strategies with regard to training needs assessment related to management skill program for Happy Wine, the company’s constraints are to be considered initially (Happy Wine, 2013). Overview of Training and Development of Happy Wine Miami Happy Wine Miami represents the US-based wine company. In this regard, it can be stated that the company follows the norms and the standards that have been fixed by the US government in association with wine industries. Therefore, constraints, as well as challenges faced by such wine industries, are almost same being situated within the similar country. The vision statement of Happy Wine reflects about its extension of wine shops worldwide. It further inculcates accessible as well as knowledgeable inclusions that further help the company to achieve success within national as well as international context. Wine industry represents the highly extensive market as it involves higher capital. This acts as a hurdle or a barrier for the entrance of such industries within the prevailing market scenario. Furthermore, wine industries incorporate the aspect of product differentiation which acts as an effectual marketing strategy for industries. Thereupon, Happy Wine also enjoys a variety of wines from all over the world. The strategy concerning product differentiation supports the company in terms of adopting various valuable decisions and executing effectual plans to foster growth and development in this competitive landscape. Furthermore, it can be apparently observed that in recent years, wi ne consumption has accelerated to its height. Wine is being consumed by the younger group that has given it a new height and growth. This further has given rise to numerous issues and challenges that wine industries are fronting in recent market scenario (Wall Street Journal, 2013). In relation to the training needs assessment with regard to management skill, it is necessary to analyze the breach between the present scenario and the need for training and expansion program to fill in the gap.