Java 实现排序

public class Sort {public static void main(String[] args) {int data[] = {43,54,123,5,98,10,7,74,5,54};System.out.println("原先数组：");for(int d : data) {System.out.print(d + "  ");}System.out.println("\n");/*System.out.println("冒泡排序：");MySort.bubleSort(data, 10);for(int d : data) {System.out.print(d + "  ");}System.out.println("\n");System.out.println("快速排序：");MySort.quickSort(data, 0, 9);for(int d : data) {System.out.print(d + "  ");}System.out.println("\n");System.out.println("插入排序：");MySort.bInsertSort(data, 10);for(int d : data) {System.out.print(d + "  ");}System.out.println("\n");System.out.println("希尔排序：");MySort.shellSort(data, 10);for(int d : data) {System.out.print(d + "  ");}System.out.println("\n");System.out.println("选择排序：");MySort.selectSort(data, 10);for(int d : data) {System.out.print(d + "  ");}System.out.println("\n");System.out.println(" 堆排序 ：");int data2[] = C语言实现8种排序C语言实现8种排序{-1,43,54,123,5,98,10,7,74,5,54};MySort.heapSort(data2, 10);for(int i = 1; i < 11; i++) {System.out.print(data2[i] + "  ");}System.out.println("\n");/*System.out.println("归并排序：");MySort.mergeSort(data, 0, 9);for(int d : data) {System.out.print(d + "  ");}System.out.println("\n");*/System.out.println("基数排序：");MySort.radixSort(data, 10);for(int d : data) {System.out.print(d + "  ");}System.out.println("\n");}
}class MySort {/----------------------冒泡排序----------------------**/public static void bubleSort(int data[], int n) {for(int j = 0; j < n - 1; j++) {for(int i = 0; i < n - j - 1; i++) {if(data[i] > data[i+1]) {int temp = data[i];data[i] = data[i+1];data[i+1] = temp;}}}}/----------------------快速排序----------------------**/public static int findPos(int data[], int low, int high) {int t = data[low];while(low < high) {while(low < high && data[high] >= t) {high--;}data[low] = data[high];while(low < high && data[low] <= t) {low++;}data[high] = data[low];}data[low] = t;return low;}public static void quickSort(int data[], int low, int high) {if(low > high) {return;}int pos = findPos(data, low, high);quickSort(data, low, pos - 1);quickSort(data, pos + 1, high);}/----------------------插入排序----------------------**/public static void bInsertSort(int data[], int n) {int low, high, temp, mid;for(int i = 1; i < n; i++) {low = 0;temp = data[i];high = i - 1;while(low <= high) {mid = (low + high) / 2;if(data[mid] > temp) {high = mid - 1;}else {low = mid + 1;}}int j = i;while((j > low) && data[j-1] > temp) {data[j] = data[j-1];--j;}data[low] = temp;}}/----------------------希尔排序----------------------**/public static void shellSort(int data[], int n) {int key, j;for(int step = n / 2; step > 0; step /= 2) {for(int i = step; i < n; i++) {key = data[i];for(j = i - step; j >= 0 && key < data[j]; j -= step) {data[j+step] = data[j];}data[j+step] = key;}}}/----------------------选择排序----------------------**/public static void selectSort(int data[], int n) {for(int i = 0; i < n - 1; i++) {int mix = i;for(int j = i + 1; j < n; j++) {if(data[j] < data[mix]) {mix = j;}}if(i != mix) {int temp = data[i];data[i] = data[mix];data[mix] = temp;}}}/----------------------堆排序----------------------**/public static void heapSort(int data[], int n) {for(int i = n / 2; i > 0; i--) {heapAdjust(data, i, n);}for(int i =n; i > 1; i--) {swap(data, 1, i);heapAdjust(data, 1, i - 1);}}public static void swap(int data[], int i, int j) {int temp = data[i];data[i] = data[j];data[j] = temp;}public static void heapAdjust(int data[], int i, int n) {int temp = data[i];for(int j = 2 * i; j <= n; j *= 2) {if(j < n && data[j] < data[j+1]) {j++;}if(temp >= data[j]) {break;}data[i] = data[j];i = j;}data[i] = temp;}/----------------------归并排序----------------------**/public static void mergeSort(int data[], int first, int last) {int mid = 0;if(first < last) {mid = (first + last) / 2;mergeSort(data, first, mid);mergeSort(data, mid + 1, last);merge(data, first, mid, last);}return;}public static void merge(int data[], int low, int mid, int high) {int[] temp = new int[high-low+1];int k;int left_low = low;int left_high = mid;int right_low = mid+1;int right_high = high;for(k = 0; left_low <= left_high && right_low <= right_high; k++) {if(data[left_low] <= data[right_low]) {temp[k] = data[left_low++];} else {temp[k] = data[right_low++];}}if(left_low <= left_high) {for(int i = left_low; i <= left_high; i++) {temp[k++] = data[i];}}if(right_low <= right_high) {for(int i = right_low; i <= right_high; i++) {temp[k++] = data[i];} }for(int i = 0; i < high-low+1; i++) {data[low+1] = temp[i];}return;}/----------------------基数排序----------------------**/public static int getNumPos(int num, int pos) {int temp = 1;for(int i = 0; i < pos - 1; i++) {temp *= 10;}return (num / temp) % 10;}public static void radixSort(int data[], int n) {int num = 0;int index = 0;int k = 0;int[][] radixArrays = new int[10][];for(int i = 0; i < 10; i++) {radixArrays[i] = new int[n+1];radixArrays[i][0] = 0;}for(int pos = 1; pos <= 31; pos++) {for(int i = 0; i < n; i++) {num = getNumPos(data[i], pos);index = ++radixArrays[num][0];radixArrays[num][index] = data[i];}int j = 0;for(int i = 0; i < 10; i++) {for(k = 1; k <= radixArrays[i][0]; k++) {data[j++] = radixArrays[i][k];}radixArrays[i][0] = 0;}}}
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