static void Main(string[] args)
{
// List test
#region List Test Cases
ListNode pHead1 = new ListNode(1);
pHead1.next = new ListNode(3);
pHead1.next.next = new ListNode(5);
var kNode = new ListOperation().FindKthToTail(pHead1, 1);
var rev = new ListOperation().ReverseList(null);
ListNode pHead2 = new ListNode(2);
pHead2.next = new ListNode(4);
pHead2.next.next = new ListNode(6);
var lstTmp = new ListOperation().Merge(pHead1, pHead2);
#endregion
//Array Sort Test
#region ArrayTest
var arrsort = new ArraySort();
var arr = arrsort.BubbleSort(new int[] { 2, 3, 98, 10, 23, 45, 4, 6 });
arr = arrsort.QuickSort(arr, arr.GetLowerBound(0), arr.GetUpperBound(0));
arr = arrsort.SelectSort(arr);
arr = arrsort.MergeSort(new int[] { 2, 3, 18, 10, 20, 15, 4, 6 });
ArrayOper.IsPopOrder(new int[] { 1, 2, 3, 4, 5 }, new int[] { 4, 5, 3, 2, 1 });
var retNum = ArrayOper.MoreThanHalfNum(new int[] { 1, 2, 3, 2, 4, 2, 5, 2, 3 });
ArrayOper.PrintMinNumber(new int[] { 2, 3, 4, 5, 1 });
var urglyNum = ArrayOper.GetUglyNumber(10);
var firstChar = ArrayOper.FirstNotRepeatingChar("google");
var reverseNum = ArrayOper.InversePairs(new int[] { 1, 2, 3, 4, 5, 6, 7, 0 });
int[] num1 = new int[1];
int[] num2 = new int[1];
ArrayOper.FindTwoNumbersAppearOnce(new int[] { 1, 1, 2, 2, 3, 4, 5, 5, 4, 3, 6, 7 }, num1, num2);
#endregion
//String practice
//Graph Test
#region Graph Test
GraphTraversal.Graph graph = new GraphTraversal.Graph();
var retList = graph.printMatrixClosewise();
graph.DFS();
graph.BFS();
graph.FindNextVertex(0, 0, 0, graph.edgeVisited);
var ret1 = graph.lstResult;
//dijkstra algrithm
GraphShortPath diPath = new GraphShortPath();
int[] retArr = diPath.Dijkstra();
//Floyd algrithm
GraphShortPath floydPath = new GraphShortPath();
int[][] retAll = floydPath.Floyd();
#endregion
//Tree test
#region Tree Test
Tree t = new Tree();
t.InsertNode(9);
t.InsertNode(8);
t.InsertNode(10);
t.InsertNode(12);
t.InsertNode(2);
t.InsertNode(3);
t.InsertNode(4);
t.InsertNode(5);
t.InsertNode(6);
t.InsertNode(7);
t.InsertNode(1);
t.IsBST(t.Root, int.MinValue, int.MaxValue);
//t.ConvertToSortedList(t.Root);
//var x = t.head.Data;
//another invalid test cases
Tree bst = new Tree();
bst.Root = new TreeNode(10);
bst.Root.Left = new TreeNode(5);
bst.Root.Right = new TreeNode(12);
bst.Root.Left.Left = new TreeNode(6);
bst.Root.Left.Right = new TreeNode(7);
bool isBST = bst.IsBST(bst.Root, int.MinValue, int.MaxValue);
var secTreeOperBst = new TreeOperations().IsBST(bst.Root);
int[] testData = new int[] { 10, 6, 11, 12, 7 };
//int[] testData = new int[] { 10, 12, 14,17,18 };
var bRet = t.IsArrValidPreOrderBST(testData);
List <int> lstRet = new List <int>();
var recTraversal = new RecTraversal();
recTraversal.PreOrderTreeRecursive(t.Root, lstRet);
lstRet.Clear();
recTraversal.InOrderTreeRecursive(t.Root, lstRet);
lstRet.Clear();
recTraversal.PostOrderTreeRecursive(t.Root, lstRet);
var stackTraversal = new StackTraversal();
lstRet = stackTraversal.PreOrderTreeStack(t.Root);
lstRet = stackTraversal.InOrderTreeStack(t.Root);
lstRet = stackTraversal.PostOrderTreeStack(t.Root);
lstRet = new BreadthTraversal().BreadthTreeTraversal(t.Root);
var treeOper = new TreeOperations();
treeOper.SumEachPath(t.Root, 0, lstRet);
var totalRet = treeOper.FindPath(bst, 22);
int max = treeOper.MaxHeightOfTree(t.Root);
int totalNodes = treeOper.TotalNodes(t.Root);
int totalLeaves = treeOper.TotalLeaves(t.Root);
Tree B = new Tree();
B.InsertNode(1);
B.InsertNode(2);
B.InsertNode(3);
B.InsertNode(4);
B.InsertNode(5);
B.InsertNode(6);
B.InsertNode(7);
var bIncluded = treeOper.IsATreeIncludeBTree(t.Root, B.Root);
var bTreeOperBst = treeOper.IsBST(B.Root);
treeOper.AllDepth(B.Root, 0);
var lstOperRet = treeOper.lstDepth;
var isbalanceBST = treeOper.IsBalancedBST(B.Root);
var projectionTreeView = new ProjectionTree();
lstRet.Clear();
lstRet = projectionTreeView.LeftViewNodeTraversal(t.Root, lstRet);
lstRet.Clear();
lstRet = projectionTreeView.RightViewNodeTraversal(t.Root, lstRet);
var lst = projectionTreeView.TopViewNodeTraversal(t.Root);
foreach (var e in lst)
{
//Console.Write(e.Node.Data + " ");
}
#endregion
//Test case: Tree -> MultipleTree
#region multiple nodes tree
MultipleTree tree = new MultipleTree();
int data = 10;
int[] ary = new int[6] {
1, 10, 20, 30, 50, 60
};
tree.InsertNode(data, ary);
data = 5;
ary = new int[3] {
7, 8, 9
};
tree.InsertNode(data, ary);
data = 55;
ary = new int[4] {
100, 200, 300, 400
};
tree.InsertNode(data, ary);
tree.SetRightSiblings(tree.Root);
tree.PrintNodeSibling(tree.Root);
Console.Read();
#endregion
//Test case: BackTracning -> Recursion
#region Recursive & backtracking
Backtracking.ListAll(50, 30, 0);
Console.Read();
//Test case: Practice -> BestPlan
Feature[] features = new Feature[11];
features[0] = new Feature("Email");
features[1] = new Feature("Sharepoint");
features[2] = new Feature("OneDrive");
features[3] = new Feature("Lync");
features[4] = new Feature("Skype");
features[5] = new Feature("Word");
features[6] = new Feature("Excel");
features[7] = new Feature("Powerpoint");
features[8] = new Feature("Access");
features[9] = new Feature("Support");
features[10] = new Feature("Warranty");
List <Plan> plans = new List <Plan>();
var tmp = new List <Feature>();
tmp.Add(features[1]); tmp.Add(features[2]); tmp.Add(features[3]);
plans.Add(new Plan("Plan0", 400, tmp));
tmp.Clear(); tmp.Add(features[1]);
plans.Add(new Plan("Plan1", 100, tmp));
tmp.Clear(); tmp.Add(features[3]);
plans.Add(new Plan("Plan2", 100, tmp));
tmp.Clear(); tmp.Add(features[3]); tmp.Add(features[9]);
plans.Add(new Plan("Plan3", 100, tmp));
tmp.Clear(); tmp.Add(features[2]); tmp.Add(features[8]);
plans.Add(new Plan("Plan4", 100, tmp));
tmp.Clear(); tmp.Add(features[2]); tmp.Add(features[3]); tmp.Add(features[7]);
plans.Add(new Plan("Plan5", 800, tmp));
tmp.Clear(); tmp.Add(features[1]); tmp.Add(features[3]); tmp.Add(features[7]);
plans.Add(new Plan("Plan6", 1800, tmp));
List <Feature> selectedFeatures = new List <Feature>();
selectedFeatures.Add(features[1]);
selectedFeatures.Add(features[2]);
selectedFeatures.Add(features[3]);
var p = new PlanSearch(plans, selectedFeatures); //plan research
var ret = p.GetLowCostPlan();
double cost = 0.0;
Console.WriteLine();
foreach (var el in ret)
{
cost = cost + el.Cost;
Console.Write(el.Name + " ");
}
Console.Write(" The best plans price: " + cost.ToString());
Console.WriteLine();
Console.WriteLine("Done!");
Console.Read();
#endregion
}
static void Main(string[] args)
{
#region N-Queens Problem(Backtracking)
Backtracking backtracking = new Backtracking();
backtracking.GetQueensPlacedInMatrix();
#endregion
#region Get fibonacci series using generic collection.
var number = 30;
IEnumerable <int> fibonacciSeries = GetFibonacciSeries(number);
foreach (var fibNumber in fibonacciSeries)
{
Console.Write($"{fibNumber} ");
}
#endregion
#region check for palindrome string.
var phrase = "example";
bool isPalindrome = CheckPhraseIspalindrome(phrase);
Console.WriteLine($"Is the given phrase palindrome: {isPalindrome}");
#endregion
#region Longest common sequence in given X & Y pattern.
var firstString = "ACBDEA";
var secondString = "ABCDA";
var lengthOfFirstString = firstString.Length;
var lengthOfSecondString = secondString.Length;
var intArray = new int[lengthOfFirstString + 1, lengthOfSecondString + 1];
var stringArray = new string[lengthOfFirstString + 1, lengthOfSecondString + 1];
//n
for (var i = 0; i <= lengthOfFirstString; i++)
{
intArray[i, 0] = 0;
}
//n
for (var j = 0; j <= lengthOfSecondString; j++)
{
intArray[0, j] = 0;
}
////n
for (int i = 1; i <= lengthOfFirstString; i++)
{
//n
for (int j = 1; j <= lengthOfSecondString; j++)
{
if (firstString[i - 1] == secondString[j - 1])
{
intArray[i, j] = intArray[i - 1, j] + 1;
stringArray[i, j] = "D";
}
else if (intArray[i - 1, j] >= intArray[i, j - 1])
{
intArray[i, j] = intArray[i - 1, j] + 1;
stringArray[i, j] = "U";
}
else
{
intArray[i, j] = intArray[i, j - 1] + 1;
stringArray[i, j] = "L";
}
}
}
////output=2n+n2=n2
var answer = string.Empty;
int k = lengthOfFirstString, l = lengthOfSecondString;
while (true)
{
if (k == 0 && k == 0)
{
break;
}
if (stringArray[k, l] == "D")
{
answer = firstString[k - 1] + answer;
k--;
l--;
}
if (stringArray[k, l] == "U")
{
k--;
}
if (stringArray[k, l] == "L")
{
l--;
}
}
Console.Write(answer);
Console.ReadLine();
#endregion
}