publicclassQuickSort{// 进行排序的主方法publicvoidsort(int[]array,intlow,inthigh){if(low<high){// 获取分区索引intpi=partition(array,low,high);// 递归调用以排序子数组sort(array,low,pi-1);sort(array,pi+1,high);}}// 分区方法,用来选择基准并将小于基准的放在左边,大于基准的放在右边privateint...
我们可以用以下代码来测试算法: publicstaticvoidmain(String[]args){int[]arr={64,34,25,12,22,11,90};// 待排序数组bubbleSort(arr);// 调用冒泡排序方法System.out.println("Sorted array:");// 输出提示for(intnum:arr){System.out.print(num+" ");// 输出排序结果}} 1. 2. 3. 4. 5. 6....
that is, adding n elements requires O(n) time. All of the other operations run in linear time (roughly speaking). The constant factor is low compared to that for the LinkedList implementation.
快速排序是高效的排序算法，通过分治策略，将大问题分解成小问题解决，平均时间复杂度为O(n log n)。How to implement the quicksort algorithm in Java:Select the pivot: At the start of quicksort, an element from the array is chosen as the pivot (usually the first element or the last element)....
mergingSortRecursion(data, middle + 1, right); merge(data, left, middle, right); } } public static void merge(int[] data, int left, int middle, int right) { int[] tempArray = new int[data.length]; int i = left; // 左边序列的游标 int j = middle + 1; // 右边序列的游标 in...
An easy example would be a huge array of integers for which you would like to compute the sum (see Figure 1). Given that addition is commutative, one may split the array into smaller portions where concurrent threads compute partial sums. The partial sums can then be added to compute the...
/ 2 = n^2 / 2 + n / 2。 3，根据 大O推导法 可以知道，此时时间复杂度为 O(n^2)。
int[]numbers={3,2,1};Arrays.sort(numbers);System.out.println(Arrays.toString(numbers));// Output:// [1, 2, 3] Java Copy In this example, we useArrays.sort()to sort an array of integers. The output shows the array sorted in ascending order. ...
Searches the specified array of bytes for the specified value using the binary search algorithm. static int binarySearch(byte[] a, int fromIndex, int toIndex, byte key) Searches a range of the specified array of bytes for the specified value using the binary search algorithm. static int bina...
// Build heap (rearrange array) for (int i = n / 2 - 1; i >= 0; i--) heapify(arr, n, i); Create array and calculate i Steps to build max heap for heap sort Steps to build max heap for heap sort Steps to build max heap for heap sort As shown in the above diagram, ...