After a couple of meowtalities, the popularity growth of the video blog was resumed, and the updated version of the analyzer program eliminated all the cheating. Now Muffin can devote himself to his favorite thing to do.
Every year the boss participates in all-cat competitions in long jumps from the wall. Competitions are held among the best cats in the country and require serious preparation.
Selection for competitions is tough, it’s hard to qualify for them, and that’s Muffin needs a program that runs qualification rounds according to the rules of the championship. Anyway, here is the technical assignment:
Meow! I train regularly and I want to understand if I will qualify.
During the training I do a few jumps and collect the lengths of the jumps into the array attempts.
The qualification value is stored in the qualificationDistance variable.
The program must choose the three best jumps, calculate the average value of these three jumps and write it into the averageBest variable.
If the average of the best three jumps is greater than the qualification value, then I passed the qualification and variable qualified must contain true. If qualification round is not passed, then qualified must contain false.
You can find the best three values in different ways. You can sort the array in ascending order (you already know how to do it) and take the last three elements (you practiced that as well).
You can test yourself and try to sort the array in descending order. Then after the sorting, the best three values will be at the beginning of the array.
When you are done, press Hey boss, here’s your program!
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Minimum of boring theory and lots of practical tasks."><meta name="twitter:image" property="og:image" content="https://htmlacademy.org/og/htmlacademy.png"><meta name="twitter:card" content="summary_large_image"><link rel="canonical" href="https://htmlacademy.org/courses/javascript-programming/arrays/best-jumps-challenge"><meta name="theme-color" content="#2f358f"></head><body class="course-interface course-interface--light" data-base="/assets/courses/5/"><header class="page-header page-header--course"><div class="page-header__inner"><div class="page-header__top"><a class="page-header__logo" href="/" aria-label="HTML Academy Home"><img src="https://assets.htmlacademy.org/img/logo--small.svg?cs=1218aec0be4a5f23db79ad29a14e30f7f9fb9a25" width="24" height="36" alt="HTML Academy"></a><nav class="main-nav main-nav--mini" role="navigation"><div class="main-nav__course-nav"><a class="main-nav__course-item main-nav__course-button main-nav__course-button--prev" href="/courses/javascript-programming/arrays/summary-2">Summary of “Arrays”. Part 2</a><div class="main-nav__course-item main-nav__course-list main-nav__course-list--collapsed"><b class="main-nav__course-title">Arrays</b><span class="main-nav__course-stat">30/30</span><div class="main-nav__course-contents"><a class="main-nav__course-contents-link" href="/courses/javascript-programming/arrays">Back to the list of tasks</a><ul class="main-nav__course-contents-list"><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/arrays/big-data">1. Little Muffin and Big Data</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/arrays/average-value">2. Average value</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/arrays/analizer-almost-ready">3. Finishing the traffic analyzer</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/arrays/new-datum">4. New data</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/arrays/massive-data">5. A lot of data? An array!</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/arrays/read-from-array">6. Reading from an array using index</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/arrays/variable-as-index">7. Variable as index</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/arrays/array-length">8. Array length</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/arrays/loop-through-array">9. Let’s hit arrays with loops!</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/arrays/sum-in-loop">10. Summation in the loop</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/arrays/average-with-array">11. Finishing refactoring</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/arrays/one-little-investigation">12. One small analytical investigation</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/arrays/write-by-index">13. Writing to an array by index</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/arrays/investigation-completed">14. The murderer is a butler!</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/arrays/summary-1">15. Summary of “Arrays”. Part 1</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/arrays/cipher-beginner">16. Fifth program: Beginner decryptor</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/arrays/vague-suspicions">17. Vague suspicions</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/arrays/swap-elements">18. Swapping the elements</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/arrays/minimum-element">19. Looking for the minimum element</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/arrays/minimum-elemen-found">20. The minimum element is found!</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/arrays/start-sorting">21. Starting sorting</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/arrays/continue-sorting">22. Continue sorting</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/arrays/finish-sorting">23. Finish sorting</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/arrays/test-sorting">24. Testing the sorting</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/arrays/median-start">25. Median of an odd number of elements</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/arrays/median-end">26. Median of an even number of elements</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/arrays/investigation-continues">27. Green light</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/arrays/investigation-completed-again">28. The murderer is the butler, again!</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/arrays/summary-2">29. Summary of “Arrays”. Part 2</a></li><li class="main-nav__course-contents-item main-nav__course-contents-item--current"><a href="/courses/javascript-programming/arrays/best-jumps-challenge">30. Sixth program: Long jump records</a></li></ul></div></div><a class="main-nav__course-item main-nav__course-button main-nav__course-button--next" href="/courses/javascript-programming/arrays">List of tasks</a></div><ul class="main-nav__list main-nav__list--user main-nav__list--user-guest"><li class="main-nav__item" itemprop="name"><a class="main-nav__link" href="/signup?redirect_url=%2Fcourses%2Fjavascript-programming%2Farrays%2Fbest-jumps-challenge" title="Sign up" data-modal="open" data-value="register" itemprop="url"><span class="main-nav__icon" aria-hidden="true"><svg aria-hidden="true"><use xlink:href="/img/sprites/general.svg#user"></use></svg></span>Sign up</a></li><li class="main-nav__item main-nav__item--login" itemprop="name"><a class="main-nav__link" href="/login?redirect_url=%2Fcourses%2Fjavascript-programming%2Farrays%2Fbest-jumps-challenge" title="Log in" data-modal="open" data-value="login" itemprop="url"><span class="main-nav__icon" aria-hidden="true"><svg aria-hidden="true"><use xlink:href="/img/sprites/general.svg#login"></use></svg></span>Log in</a></li></ul></nav></div></div></header><main class="course-container course-interface__content js-course"><div class="course-container__inner"><article class="course-layout"><div class="course-layout__sidebar course-theory"><div class="course-theory__inner course-theory__inner--left-stub"><button class="course-theory__close icon-close icon-close--light" type="button" title="Close">Close</button><ul class="course-tabs course-tabs--non-interactive course-layout__theory-heading"><li class="course-tabs__item course-tabs__item--external course-tab course-tab--centered"><span class="course-tab__icon"><svg aria-hidden="true"><use xlink:href="courses#icon-theory"></use></svg></span><span class="course-tab__title">Theory</span></li><li class="course-tabs__item course-tabs__item--internal course-tab course-tab--centered course-tab--active"><span class="course-tab__icon"><svg aria-hidden="true"><use xlink:href="courses#icon-theory"></use></svg></span><span class="course-tab__title">Theory</span></li></ul><section class="course-theory__content"><div class="course-theory__content-inner"><h1 class="course-theory__content-heading">Sixth program: Long jump records</h1><div class="course-theory__content-text"><p>After a couple of meowtalities, the popularity growth of the video blog was resumed, and the updated version of the analyzer program eliminated all the cheating. Now Muffin can devote himself to his favorite thing to do.</p><p>Every year the boss participates in all-cat competitions in long jumps from the wall. Competitions are held among the best cats in the country and require serious preparation.</p><p>Selection for competitions is tough, it’s hard to qualify for them, and that’s Muffin needs a program that runs qualification rounds according to the rules of the championship. Anyway, here is the technical assignment:</p><blockquote><p>Meow! I train regularly and I want to understand if I will qualify.</p><p>During the training I do a few jumps and collect the lengths of the jumps into the array <code>attempts</code>.</p><p>The qualification value is stored in the <code>qualificationDistance</code> variable.</p><p>The program must choose the three best jumps, calculate the average value of these three jumps and write it into the <code>averageBest</code> variable.</p><p>If the average of the best three jumps is greater than the qualification value, then I passed the qualification and variable <code>qualified</code> must contain <code>true</code>. If qualification round is not passed, then <code>qualified</code> must contain <code>false</code>.</p></blockquote><div class="course-theory__spoiler course-theory__spoiler--collapsed"><button class="course-theory__spoiler-switch" type="button">Show the hint</button><div class="course-theory__spoiler-content"><p>You can find the best three values in different ways. You can sort the array in ascending order (you already know how to do it) and take the last three elements (you practiced that as well).</p><p>You can test yourself and try to sort the array in descending order. Then after the sorting, the best three values will be at the beginning of the array.</p></div></div><p>When you are done, press <span class="course-theory__example-button">Hey boss, here’s your program!</span></p></div></div></section><div class="course-theory__controls"><button class="button button--close" type="button">To the task</button></div></div></div><div class="course-layout__column"><ul class="course-tabs course-layout__course-tabs"><li class="course-tabs__item course-tabs__item--limited course-tabs__item--limited-large course-tab"><span class="course-tab__title">index.html</span></li></ul><div class="course-layout__editors"><div class="course-editor course-layout__editor"><span class="course-editor__label"><span class="course-editor__label-item">HTML</span></span><div class="course-editor__item" id="html"></div></div></div></div><div class="course-layout__column"><span class="course-separator-control"><svg aria-hidden="true"><use xlink:href="courses#icon-arrows-separator"></use></svg></span><div class="course-browser"><div class="course-browser__menu"><span class="course-browser__menu-item course-browser__address"><span class="course-browser__menu-item-inner">HTML</span></span><button class="js--autorun course-browser__menu-item course-browser__menu-button course-browser__menu-button--text-with-icon course-browser__menu-button--autorun course-browser__menu-button--autorun-on" title="Autorun" type="button"><span class="course-browser__menu-item-inner"><svg aria-hidden="true"><use xlink:href="/img/sprites/courses.svg#icon-autorun"></use></svg>
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