Merge branch 'keenbin7-patch'

Author: haoel

src/pascalTriangle/pascalTriangle.II.cpp

@@ -21,21 +21,14 @@
 using namespace std;
 
 vector<int> getRow(int rowIndex) {
-    vector<int> v;
-    for(int i=0; i<rowIndex; i++){
-       if(i==0){
-           v.push_back(1);
-       }else{
-           v.push_back(0);
-       }
-    }
+    vector<int> v(rowIndex+1, 0);
+    v[0]=1;
 
     for (int i=0; i<rowIndex; i++){
         for(int j=i+1; j>0; j--){
            v[j] += v[j-1];
         } 
     }
-    v.push_back(1);
     return v;
 
 }
@@ -51,6 +44,9 @@ void printVector( vector<int>  pt)
 
 int main(int argc, char** argv)
 {
-    int n = atoi(argv[1]);
+    int n = 3;
+    if (argc>1) {  
+        n = atoi(argv[1]);
+    }
     printVector(getRow(n)); 
 }