Merge pull request #628 from goodxodyd11/master

Create BeadSort.cpp

Sorting/BeadSort.cpp

@@ -0,0 +1,63 @@
+// C++ program to implement gravity/bead sort 
+#include <stdio.h>
+#include <string.h>
+using namespace std; 
+  
+#define BEAD(i, j) beads[i * max + j] 
+  
+// function to perform the above algorithm 
+void beadSort(int *a, int len) 
+{ 
+    // Find the maximum element 
+    int max = a[0]; 
+    for (int i = 1; i < len; i++) 
+        if (a[i] > max) 
+           max = a[i]; 
+  
+    // allocating memory 
+    unsigned char beads[max*len]; 
+    memset(beads, 0, sizeof(beads)); 
+  
+    // mark the beads 
+    for (int i = 0; i < len; i++) 
+        for (int j = 0; j < a[i]; j++) 
+            BEAD(i, j) = 1; 
+  
+    for (int j = 0; j < max; j++) 
+    { 
+        // count how many beads are on each post 
+        int sum = 0; 
+        for (int i=0; i < len; i++) 
+        { 
+            sum += BEAD(i, j); 
+            BEAD(i, j) = 0; 
+        } 
+  
+        // Move beads down 
+        for (int i = len - sum; i < len; i++) 
+            BEAD(i, j) = 1; 
+    } 
+  
+    // Put sorted values in array using beads 
+    for (int i = 0; i < len; i++) 
+    { 
+        int j; 
+        for (j = 0; j < max && BEAD(i, j); j++); 
+  
+        a[i] = j; 
+    } 
+} 
+  
+// driver function to test the algorithm 
+int main() 
+{ 
+    int a[] = {5, 3, 1, 7, 4, 1, 1, 20}; 
+    int len = sizeof(a)/sizeof(a[0]); 
+  
+    beadSort(a, len); 
+  
+    for (int i = 0; i < len; i++) 
+        printf("%d ", a[i]); 
+  
+    return 0; 
+}