Recursion Final

Recursion/P29_25_SubsetGen.cpp

@@ -6,21 +6,24 @@ using namespace std;
 //n: 本次递归数组长度
 //l: 给定数组长度
 template <class T>
-T* sub(int m ,int n, int l, T* x){
-	T* tmp = new T [l];
-	if(m == l){
-		for(int i = 0; i < l; i++){
-			cout << tmp[i] << endl;
+T* sub(int m ,int n, int l, T* x, T* tmp){
+	if(m == l)
+	{
+
+		cout << "[ ";
+		for(int i = 0; i < n; i++){
+			cout << tmp[i] << " ";
 		}
+		cout << " ]" << endl;
 		return tmp;
 	
 	}
 	//不选a[i]
-	sub(m + 1, n, l, x);
+	sub(m + 1, n, l, x, tmp);
 
 	//选a[i]
 	tmp[n] = x[m];
-	sub(m + 1, n + 1, l, x);
+	sub(m + 1, n + 1, l, x, tmp);
 
 
 }
@@ -34,8 +37,9 @@ int main(){
 	for(int i = 0; i < num ; i++){
 		p[i] = new double[n];
 	}
+	double* tmp = new double[n];
 	double arr[] = {1, 2, 3, 4, 5};
-	sub(0, 0, 5, arr);
+	sub(0, 0, 5, arr, tmp);
 	return 0;
 }