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Generating sequence of a given length using recursion

Author: logisticloon

p.cpp

@@ -0,0 +1,49 @@
+//# program to generate a sequence of length l from the elemnts in array A
+
+
+#include<iostream>
+#include<bits/stdc++.h>
+using namespace std;
+void generate_sequence(int * A, int n, int len,int *B,int k){
+if(len==0)	{
+for(int i=0;i<k;i++)
+	cout<<B[i]<<" ";
+cout<<endl;}
+else{
+int i=0;
+	while(i<n){
+	B[k-len]=A[i];
+	generate_sequence(A,n,len-1,B,k);
+	i++;
+	}
+
+}
+
+
+}
+
+int main()
+{
+
+	//n=size of array A;
+	// Array A contains the integers which we are going to use to create sequence
+	//len = the length of sequence you wish to create
+	// B = the array where the created sequence will be stored
+	// k= size of array B, k=len (inital value of len )
+	
+	
+	
+	
+	int k,len,n;
+	cin>>n>>len;
+	k=len;
+	int *A=(int *)malloc( n*sizeof(int));
+	int *B=(int *)malloc( k*sizeof(int));
+	cout<<"Enter "<<n <<" array elements \n";
+	int i=0;
+	for(i;i<n;i++)
+		cin>>A[i];
+	generate_sequence(A,n,len,B,k);
+	
+return 0;
+}