Add 堆排序

堆排序

@@ -0,0 +1,66 @@
+//堆排序
+#include <stdio.h>
+#define N 1000
+#define INF 999999999
+int h[N];
+void heapAdjust(int n,int par)
+{
+    int tmp,pos,lc,rc;
+    while (par <= n/2) {
+        tmp = h[par]; 
+        lc = par<<1;
+        rc = lc+1;
+        pos = par;
+        if (h[par] < h[lc]) {
+            h[par] = h[lc];
+            pos = lc;
+        }
+        if (rc <= n && h[par] < h[rc]) {
+            h[par] = h[rc];
+            pos = rc;
+        }
+        if (pos == par) 
+            break;
+        else
+            h[pos] = tmp;
+        par = pos;
+    }
+}
+void createHeap(int n)
+{
+    int i;
+
+    for (i = n/2; i != 0; i--) {
+        heapAdjust(n, i);
+    }
+}
+void heapSort(int n)
+{
+    int ntimes = n;
+
+    while (ntimes--) {
+        printf("%d\n", h[1]);
+        h[1] = h[n];
+        h[n--] = 0;
+        heapAdjust(n, 1);
+    }
+}
+int main(void)
+{    
+    int n, i;
+    
+    scanf("%d", &n);
+    h[0] = INF;
+    for (i = 1; i != n+1; i++) {
+        scanf("%d", &h[i]);
+    }
+    createHeap(n);
+    heapSort(n);
+    return 0;
+}
+//参考测试数据
+6
+342 31 52 626 12 124
+10
+43 525 14 21 52 3 52 45 319 15155
+//原理:堆排序需要两个过程，一是建立堆，二是堆顶与堆的最后一个元素交换位置。所以堆排序有两个函数组成。一是建堆的渗透函数，二是反复调用渗透函数实现排序的函数