Merge branch 'master' into patch-1

Datastructures/Linked List.cpp

@@ -85,6 +85,7 @@ int main()
 		cout<<"\n2. Delete";
 		cout<<"\n3. Search";
 		cout<<"\n4. Print";
+		cout<<"\n0. Exit";
 		cout<<"\n\nEnter you choice : ";
 		cin>>choice; 
 		switch (choice)
@@ -98,7 +99,8 @@ int main()
 			case 3 : 	cout<<"\nEnter the element to be searched : ";
 						cin>>x;
 						search(x); 	break;
-			case 4 : show();	break;
+			case 4 : 	show();	
+					cout<<"\n";	break;
 		}
 	}
 	while(choice!=0);

Datastructures/Stack Using Array.cpp

@@ -1,12 +1,12 @@
 #include<iostream>
 using namespace std;
 
-int stack[10];
-int top=0;
+int *stack;
+int top=0, size;
 
 void push(int x)
 {
-	if(top==10)
+	if(top==size)
 	{
 		cout<<"\nOverflow";
 	}
@@ -42,6 +42,9 @@ void topmost()
 }
 int main()
 {
+	cout<<"\nEnter Size of stack : ";
+	cin>>size;
+	stack = new int[size];
 	int ch, x;
 	do
 	{

Decimal To Binary.cpp

@@ -1,20 +1,24 @@
-#include<iostream>
+// This function convert decimal to binary number 
+//
+#include <iostream>
 using namespace std;
+
 int main()
 {
 	int number;
-	cin>>number;
-	int remainder,binary=0,var=1;
-
-do{
-		
-	 remainder=number%2;
-	number=number/2;
-	binary=binary+(remainder*var);
-	var=var*10;
+	cout << "Enter a number:";
+	cin >> number;
+	int remainder, binary = 0, var = 1;
 
+	do {
+		remainder = number % 2; 
+		number = number / 2; 
+		binary = binary + (remainder*var); 
+		var = var * 10;
 
-}
-while(number>0);
-	cout<<binary;
+	} while (number>0);
+	cout << "the binary is :";
+	cout << binary;
+	cout << endl;
+	return 0;
 }

Decimal To Hexadecimal .cpp

@@ -2,50 +2,25 @@
 
 using namespace std;
 
-void main(void)
-{
+int main(void){
 	int valueToConvert = 0; //Holds user input
 	int hexArray[8];       //Contains hex values backwards
 	int i = 0;             //counter
-	int lValue = 0;       //Last Value of Hex result
+	char HexValues[] = "0123456789ABCDEF";
 
 	cout << "Enter a Decimal Value" << endl; //Displays request to stdout
 	cin >> valueToConvert;					        //Stores value into valueToConvert via user input
 
-	while (valueToConvert > 0)        //Dec to Hex Algorithm
-	{
-		lValue = valueToConvert % 16;        //Gets remainder
-		valueToConvert = valueToConvert / 16;
-		hexArray[i] = lValue;             //Stores converted values into an array
-		i++;
+	while (valueToConvert > 15){        //Dec to Hex Algorithm
+		hexArray[i++] = valueToConvert % 16;        //Gets remainder
+		valueToConvert /= 16;
 	}
+	hexArray[i] = valueToConvert;        //Gets last value
+	
 	cout << "Hex Value: ";
-	while (i > 0)
-	{
-		//Displays Hex Letters to stdout
-		switch (hexArray[i - 1]) {
-			case 10:
-				cout << "A"; 
-				break;
-			case 11:
-				cout << "B";
-				break;
-			case 12:
-				cout << "C";
-				break;
-			case 13:
-				cout << "D";
-				break;
-			case 14: 
-				cout << "E";
-				break;
-			case 15:
-				cout << "F";
-				break;
-			default:
-				cout << hexArray[i - 1]; //if not an int 10 - 15, displays int value
-		}
-			i--;
-	}
+	while (i >= 0)
+		cout<<HexValues[hexArray[i--]];
+	
 	cout << endl;
+	return 0;
 }

Dynamic Programming/Edit Distance.cpp

@@ -30,7 +30,7 @@ int editDist(string str1, string str2, int m, int n) {
     
         //If last characters are same then continue
         //for the rest of them.
-        if(str1[m-1] == str2[n-2])
+        if(str1[m-1] == str2[n-1])
             return editDist(str1, str2, m-1, n-1);
 
         //If last not same, then 3 possibilities
@@ -63,7 +63,7 @@ int editDistDP(string str1, string str2, int m, int n) {
 
             //If character same. Recur for remaining 
             else if(str1[i-1] == str2[j-1])
-                dp[i][j] == dp[i-1][j-1];
+                dp[i][j] = dp[i-1][j-1];
 
             else
                 dp[i][j] = 1 + min(dp[i][j-1],//Insert
@@ -80,8 +80,8 @@ int main() {
     string str1 = "sunday";
     string str2 = "saturday";
     
-    cout << editDist(str1, str1, str1.length(), str2.length()) << endl;
-    cout << editDistDP(str1, str1, str1.length(), str2.length()) << endl;
+    cout << editDist(str1, str2, str1.length(), str2.length()) << endl;
+    cout << editDistDP(str1, str2, str1.length(), str2.length()) << endl;
 
     return 0;
 }

Happy_number.cpp

@@ -2,6 +2,7 @@
   and this sum turns out to be 1 */
 #include <iostream>
 using namespace std;
+
 int main()
 {
   int n,k,s=0,d;
@@ -23,4 +24,5 @@ int main()
    cout << n << " is a happy number" << endl;
   else
    cout << n << " is not a happy number" << endl;
+  return 0;
 }

Others/String Fibonacci.cpp

@@ -81,5 +81,5 @@ int main()
     cout << n << " th Fibonacci is \n";
     fib_Accurate(n);
 
-	return 0;
+    return 0;
 }

README.md

@@ -8,8 +8,8 @@ How you can contribute? See this small guide.
 
 * Use the directory structure of the repository.
 * Please describe your pull requests. 
-* Don't use **bits/stdc++.h** because this is quite Linux specific and slow down the compiler process.
-* Put in comments in your code.
-* Avoid **struct** uses instead the **class** keyword.
+* Don't use **bits/stdc++.h** because this is quite Linux specific and slows down the compiler process.
+* Put comments in your code.
+* Avoid **struct**. Instead use the **class** keyword.
 * Add some test cases in the main-function.
-* Can suggest any change in present algorithms(if needed).
+* Can suggest any change in present algorithms(if needed).

Sorting/Bubble Sort.cpp

@@ -1,39 +1,55 @@
 //Bubble Sort
 
 #include<iostream>
+#include<vector>
 using namespace std;
 
 int main()
 {
 	int n;
+	short swap_check=0;
+  	cout << "Enter the amount of numbers to sort: ";
 	cin >> n;
-	int Array[n];
-	cout<<"\nEnter any 6 Numbers for Unsorted Array : ";
+	vector<int> numbers;
+	cout << "Enter " << n << " numbers: ";
+	int num;
 
-	//Input
+  	//Input
 	for(int i=0; i<n; i++)
 	{
-		cin>>Array[i];
+		cin >> num;
+		numbers.push_back(num);
 	}
 
 	//Bubble Sorting
 	for(int i=0; i<n; i++)
 	{
-		for(int j=0; j<n-1; j++)
+		swap_check=0;
+		for(int j=0; j<n-1-i; j++)
 		{
-			if(Array[j]>Array[j+1])
+			if(numbers[j]>numbers[j+1])
 			{
-				int temp=Array[j];
-				Array[j]=Array[j+1];
-				Array[j+1]=temp;
+				swap_check=1;
+				swap(numbers[j], numbers[j+1]);
 			}
 		}
+		if(swap_check == 0)
+		{	
+			break;
+		}
 	}
 
 	//Output
 	cout<<"\nSorted Array : ";
-	for(int i=0; i<n; i++)
+	for(int i=0; i<numbers.size(); i++)
 	{
-		cout<<Array[i]<<"\t";
+		if(i != numbers.size() -1)
+		{
+			cout << numbers[i] << ", ";
+		}else
+		{
+			cout << numbers[i] << endl;
+		}
 	}
+  return 0;
 }

Sorting/Insertion Sort.cpp

@@ -6,8 +6,10 @@ using namespace std;
 int main()
 {
 	int n;
+	cout<<"\nEnter the length of your array : ";
+	cin>>n;
 	int Array[n];
-	cout<<"\nEnter any 6 Numbers for Unsorted Array : ";
+	cout<<"\nEnter any "<<n<<" Numbers for Unsorted Array : ";
 	
 	//Input
 	for(int i=0; i<n; i++)
@@ -34,5 +36,6 @@ int main()
 	{
 		cout<<Array[i]<<"\t";
 	}
+  return 0;
 }