static void Main(string[] args)
{
var fourthLargest = QuickSelect.FindKthLargest(new int[] { -10, 2, 1, 9, -6, 44, 0, 3, -17, 8 }, 4);
int[][] people = new int[][] { new int[] { 7, 0 }, new int[] { 4, 4 }, new int[] { 7, 1 },
new int[] { 5, 0 }, new int[] { 6, 1 }, new int[] { 5, 2 } };
Array.Sort(people, (a, b) => {
if (a[0] > b[0])
{
return(1);
}
else if (a[0] < b[0])
{
return(-1);
}
else
{
return(0);
}
});
var sorted = people.OrderByDescending(i => i[0]).ThenBy(i => i[1]).ToArray();
SortedList <int, int> sortedList = new SortedList <int, int>();
HashSet <int> map = new HashSet <int>();
StringBuilder sb = new StringBuilder("Hello");
for (int i = 0; i < sb.Length; i++)
{
if (sb[i] >= 65 && sb[i] <= 90)
{
sb[i] = (char)(sb[i] + 32);
}
}
int[] arrayForSort = new int[] { -10, 2, 1, 9, -6, 44, 0, 3, -17, 8 };
BubleSort.Sort(arrayForSort, false);
int[] nums2 = new int[] { 0, 1, 2, 4, 5, 6, 7, 9 };
var binRes = binarySearch(nums2, 0, nums2.Length - 1, 0);
List <int> list = new List <int>(new int[] { 1, 3, 5, 7, 9 });
var biRes = list.BinarySearch(4);
int[] nums = new int[] { 3, 0, 1 };
(new missing_number()).MissingNumber(nums);
int seed = 0;
var xor = nums.Aggregate(seed++, (x, y) => x ^ y);
xor = Enumerable.Range(1, 4).Aggregate((x, y) => x ^ y);
(new Swapping_two_integer_variables_without_an_intermediary_variable()).swapArray(nums, 0, 2);
ListNode head = new ListNode(0);
ListNode pre = head;
for (int i = 1; i < 10; i++)
{
ListNode tmp = new ListNode(i);
pre.next = tmp;
pre = pre.next;
}
var bst = (new convert_sorted_list_to_binary_search_treeV2()).SortedListToBST(head);
LeetCode.TreeNode node = new LeetCode.TreeNode(1);
LeetCode.TreeNode node1 = new LeetCode.TreeNode(2);
LeetCode.TreeNode node12 = new LeetCode.TreeNode(5);
node.left = node1;
node.right = node12;
LeetCode.TreeNode node21 = new LeetCode.TreeNode(3);
LeetCode.TreeNode node22 = new LeetCode.TreeNode(4);
node1.left = node21;
node1.right = node22;
LeetCode.TreeNode node31 = new LeetCode.TreeNode(6);
node12.right = node31;
(new flatten_binary_tree_to_linked_list()).Flatten(node);
(new construct_binary_tree_from_preorder_and_inorder_traversalV2()).BuildTree(
new int[] { 3, 9, 20, 15, 7 },
new int[] { 9, 3, 15, 20, 7 }
);
IList <IList <int> > result2 = new List <IList <int> >();
result2.Add(new int[] { 1, 2, 3 }.Concat(new int[] { 4, 5, 6 }).ToArray());
List <int[]> _matrix = new List <int[]>();
_matrix.Add(new int[] { 1, 2, 0, 4 });
_matrix.Add(new int[] { 5, 6, 7, 8 });
_matrix.Add(new int[] { 9, 10, 11, 12 });
var matrix = _matrix.ToArray();
var row1 = matrix[0];
var bol = Enumerable.Any(row1, i => i == 0);
for (int i = 0; i < 4; i++)
{
matrix[0][i] = 0;
}
//int n = 3;
//int[][] matrix = new int[n][];
//for (int i = 0; i < n; i++)
//{
// matrix[i] = new int[n];
//}
//List<int[]> positions = new List<int[]>();
//int top = 0, left = 0, count = 1;
//while (n > 0)
//{
// if (n == 1)
// {
// (positions as List<int[]>).Add(new int[] { top, left });
// break;
// }
// (positions as List<int[]>).AddRange(Enumerable.Range(left, n - 1).Select(i => new int[] { top, i }));
// (positions as List<int[]>).AddRange(Enumerable.Range(top, n - 1).Select(i => new int[] { i, (left + n - 1) }));
// (positions as List<int[]>).AddRange(Enumerable.Range(left + 1, n - 1).Reverse().Select(i => new int[] { (top + n - 1), i }));
// (positions as List<int[]>).AddRange(Enumerable.Range(top + 1, n - 1).Reverse().Select(i => new int[] { i, left }));
// top++;
// left++;
// n -= 2;
//}
//Array.ForEach(positions.ToArray(), i => {
// matrix[i[0]][i[1]] = count;
// count++;
// Console.WriteLine($"[{i[0]},{i[1]}] - {matrix[i[0]][i[1]]}");
//});
//int[][] matrix2 = new int[2][];
//IList<int[]> resti = new List<int[]>();
//int width =3, height = 3, top = 1, left = 1;
//(resti as List<int[]>).AddRange(Enumerable.Range(left, width - 1).Select(i => new int[] { top, i }).ToArray());
//(resti as List<int[]>).AddRange(Enumerable.Range(top, height - 1).Select(i => new int[] { i, (left + width - 1) }).ToArray());
//(resti as List<int[]>).AddRange(Enumerable.Range(left + 1, width - 1).Reverse().Select(i => new int[] { (top + height - 1), i }).ToArray());
//(resti as List<int[]>).AddRange(Enumerable.Range(top + 1, height - 1).Reverse().Select(i => new int[] { i, left }).ToArray());
//var qwe = resti.Select(i => matrix2[i[0]][i[1]]).ToList();
//ListNode head = new ListNode(1);
//ListNode node1 = new ListNode(4);
//ListNode node2 = new ListNode(3);
//ListNode node3 = new ListNode(2);
//ListNode node4 = new ListNode(5);
//ListNode node5 = new ListNode(2);
//head.next = node1;
//node1.next = node2;
//node2.next = node3;
//node3.next = node4;
//node4.next = node5;
//var head2 = (new partition_list()).Partition(head, 3);
var data1 = (new permutation_sequenceV2()).GetPermutation(4, 10);
int[] arr1 = new int[] { 0, 0, 3, 0, 0, 0, 0, 0, 0 };
int[] arr2 = new int[] { -1, 1, 1, 1, 2, 3 };
(new merge_sorted_array()).MergeV2(arr1, 3, arr2, 6);
var car = (new CarPlateNumber()).Generate();
int rob = (new house_robber_ii()).Rob(new int[] { 1, 2, 1, 1 });
int[] arr = Enumerable.Repeat(int.MinValue, 4).ToArray();
var perm = (new permutations()).Permute(new int[] { 1, 1, 2 });
var solutions = (new n_queens()).SolveNQueens(4);
IList <IList <string> > list2 = new List <IList <string> >();
for (int i = 0; i < 8; i++)
{
list2.Add(Enumerable.Repeat <string>(".", 8).ToList());
}
list2[0][0] = "change";
Dictionary <string, IList <int> > res3 = new Dictionary <string, IList <int> >();
var res4 = res3.Values.ToList();
var res = combination_sum.Answer(new int[] { 2, 3, 4 }, 24);
List <char[]> board = new List <char[]>();
board.Add(new char[] { '5', '3', '.', '.', '7', '.', '.', '.', '.' });
board.Add(new char[] { '6', '.', '.', '1', '9', '5', '.', '.', '.' });
board.Add(new char[] { '.', '9', '8', '.', '.', '.', '.', '6', '.' });
board.Add(new char[] { '8', '.', '.', '.', '6', '.', '.', '.', '3' });
board.Add(new char[] { '4', '.', '.', '8', '.', '3', '.', '.', '1' });
board.Add(new char[] { '7', '.', '.', '.', '2', '.', '.', '.', '6' });
board.Add(new char[] { '.', '6', '.', '.', '.', '.', '2', '8', '.' });
board.Add(new char[] { '.', '.', '.', '4', '1', '9', '.', '.', '5' });
board.Add(new char[] { '.', '.', '.', '.', '8', '.', '.', '7', '9' });
var valid = valid_sudoku.Answer(board.ToArray());
var answer = find_first_and_last_position_of_element_in_sorted_array.Answer(new int[] { 1, 2, 3, 4, 5, 6, 7, 8 }, 9);
var ans3 = Problem3.Answer(new int[, ] {
{ 1, 3, 1, 2, 9, 4 }, { 1, 5, 1, 2, 6, 1 }, { 4, 2, 1, 2, 8, 3 }, { 6, 1, 4, 3, 1, 1 }
});
var ans32 = Problem3.ImporvedAnswer(new int[, ] {
{ 1, 3, 1, 2, 9, 4 }, { 1, 5, 1, 2, 6, 1 }, { 4, 2, 1, 2, 8, 3 }, { 6, 1, 4, 3, 1, 1 }
});
var ans = Problem2.Answer(4, 6);
var ans2 = Problem2.ImporvedAnswer(4, 6);
var answer1 = Problem1.Answer1(10);
var answer11 = Problem1.ImprovedAnswer1(10);
var answer2 = Problem1.Answer2(10);
var result = generate_parentheses.GenerateParenthesis(4);
foreach (var s in result)
{
Console.WriteLine(s);
}
//ThreeSumClosestHelper threeSumClostest = new ThreeSumClosestHelper();
//var result = threeSumClostest.ThreeSumClosest(new int[] { -1, 2, 1, 4 }, 1);
//var result = ThreeSum.Answer(new int[] { -1, 0, 1, 2, -1, -4, 3, 4, -5, 6 });
//var result = ThreeSum.Answer(new int[] { 0,0,0,0,0});
//foreach (var s in result)
//{
// Console.WriteLine(string.Join(" ", s));
//}
//var result = LetterCombinationsOfAPhoneNumber.Answer("789");
//foreach (var s in result)
//{
// Console.WriteLine(s);
//}
//var result = DfsPermutation.Make(new int[] { 1,3,6,2});
//DfsPermutationGenerator dfs = new DfsPermutationGenerator(9);
//dfs.Make();
//DfsSolution.subsets(new int[] { 1,2,3});
RomanToInteger.RomanToInt("MCMXCIV");
StringtoInteger.Answer("-91283472332");
LeetCodeTesting();
QuickSortTest();
BinaryHeapTest();
BinarySearchTreeTest();
BinarySearchTreeMirrorTest();
AVLTreeTest();
RedBlackTreeTest();
SplayTreeTest();
SegmentTreeTest_Max();
SegmentTreeTest_Min();
SegmentTreeTest_Sum();
BTreeTest();
Console.ReadLine();
}