Sorting an array.
var numbers = [12, 3, 7, 9, 10, 5];
for (var i = 0; i <= numbers.length - 2; i++) {
var minValue = numbers[i];
for (var j = i + 1; j <= numbers.length - 1; j++) {
if (numbers[j] < minValue) {
minValue = numbers[j];
var swap = numbers[i];
numbers[i] = minValue;
numbers[j] = swap;
}
}
}
// Logs [3, 5, 7, 9, 10, 12];
console.log(numbers);
An array with numbers numbers is sorted by ascending elements. At each iteration, we compare minValue with the rest of the array elements. If any of them is less than minValue, it will be written to minValue, overwriting the old value, and moved to the beginning of the array. Variable swap is an auxiliary variable that we can use to swap elements.
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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. 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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. 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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/best-jumps-challenge">Sixth program: Long jump records</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%2Fsummary-2" 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%2Fsummary-2" 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"><div class="course-theory"><div class="course-theory__inner"><section class="course-theory__content"><h1 class="course-theory__content-heading course-theory__content-heading--synopsis">Summary of “Arrays”. Part 2</h1><div class="course-theory__content-text"><h2>Sorting an array.</h2><pre><code>var numbers = [12, 3, 7, 9, 10, 5];
for (var i = 0; i <= numbers.length - 2; i++) {
var minValue = numbers[i];
for (var j = i + 1; j <= numbers.length - 1; j++) {
if (numbers[j] < minValue) {
minValue = numbers[j];
var swap = numbers[i];
numbers[i] = minValue;
numbers[j] = swap;
}
}
}
// Logs [3, 5, 7, 9, 10, 12];
console.log(numbers);</code></pre><p>An array with numbers <code>numbers</code> is sorted by ascending elements. At each iteration, we compare <code>minValue</code> with the rest of the array elements. If any of them is less than <code>minValue</code>, it will be written to <code>minValue</code>, overwriting the old value, and moved to the beginning of the array. Variable <code>swap</code> is an auxiliary variable that we can use to swap elements.</p><br><a class="button button--green button--large button--wide button--icon" href="/courses/javascript-programming/arrays/best-jumps-challenge"><svg aria-hidden="true"><use xlink:href="/img/sprites/general.svg#icon-check-bold"></use></svg>
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