YOUR CODEsection. Recover a Tree From Preorder Traversal, 1031. Do NOT use the recursive function, the performance is very bad. Find All Numbers Disappeared in an Array, 452. Capacity To Ship Packages Within D Days, 1013. Maximum Profit of Operating a Centennial Wheel, 1601. 111221 1 is read off as "one 1" or 11. Last Moment Before All Ants Fall Out of a Plank, 1505. Number of Steps to Reduce a Number to Zero, 1343. Use the count and say string return by the previous function call to evaluate the next count and say string. Minimum Operations to Make Array Equal, 1553. Convert Binary Number in a Linked List to Integer, 1292. Missing Number In Arithmetic Progression, 1233. Partition Array Into Three Parts With Equal Sum, 1016. Clone Binary Tree With Random Pointer, 1489. Best Time to Buy and Sell Stock with Transaction Fee, 730. I think it is okay for me to use "a.append[(str(count_2) + '2')]", to add element for my list. The count-and-say sequence is the sequence of integers beginning as follows: 1, 11, 21, 1211, 111221, ... 1 is read off as "one 1" or 11. Question: http://oj.leetcode.com/problems/count-and-say/, Your email address will not be published. Partitioning Into Minimum Number Of Deci-Binary Numbers, 1697. Minimum Number of Days to Make m Bouquets, 1485. Remove Zero Sum Consecutive Nodes from Linked List, 1178. Note. Minimum Moves to Move a Box to Their Target Location, 1265. Count Substrings That Differ by One Character, 1639. Flip Binary Tree To Match Preorder Traversal, 982. Display Table of Food Orders in a Restaurant, 1420. Path In Zigzag Labelled Binary Tree, 1111. Minimum Number of Days to Eat N Oranges, 1557. Minimum Moves to Equal Array Elements, 462. Minimum Score Triangulation of Polygon, 1047. Flatten a Multilevel Doubly Linked List, 440. All Paths from Source Lead to Destination, 1061. I will join the members of the list after then to produce the string. Insert Delete GetRandom O(1) - Duplicates allowed, 395. Insert into a Sorted Circular Linked List, 712. Count Substrings with Only One Distinct Letter, 1186. – tonyabracadabra Apr 17 '15 at 14:02 http://oj.leetcode.com/problems/count-and-say/, Solution to boron2013 (Flags) by codility, Solution to Min-Avg-Two-Slice by codility, Solution to Perm-Missing-Elem by codility, Solution to Max-Product-Of-Three by codility. Maximum Subarray Sum with One Deletion, 1190. Binary Tree Vertical Order Traversal, 317. Find Numbers with Even Number of Digits, 1296. All Valid Triplets That Can Represent a Country, 1624. Check If Two String Arrays are Equivalent, 1663. Maximum Product of Splitted Binary Tree, 1342. [LeetCode] Count and Say, Solution The count-and-say sequence is the sequence of integers beginning as follows: 1, 11, 21, 1211, 111221, ... 1 is read off as "one 1" or 11. Remove Max Number of Edges to Keep Graph Fully Traversable, 1581. Note: The sequence of integers will be represented as a string. Program Minimum Add to Make Parentheses Valid, 945. Maximum Points You Can Obtain from Cards, 1428. Divide Array Into Increasing Sequences, 1123. Just use two slot array to do the iterations. Sum of Absolute Differences in a Sorted Array, 1687. Binary Tree Level Order Traversal II, 108. Minimum Number of Steps to Make Two Strings Anagram, 1351. Required fields are marked *. Maximum Non Negative Product in a Matrix, 1595. Find First and Last Position of Element in Sorted Array, 80. Detect Pattern of Length M Repeated K or More Times, 1567. Number of Students Unable to Eat Lunch, 1703. Wildcard Matching 45. 21 is read off as "one 2, then one 1" or 1211. The count-and-say sequence is the sequence of integers with the first five terms as following: 1. Lowest Common Ancestor of a Binary Tree III, 1653. Tiling a Rectangle with the Fewest Squares, 1247. Second Minimum Node In a Binary Tree, 673. Populating Next Right Pointers in Each Node II, 153. Triples with Bitwise AND Equal To Zero, 987. Maximum Number of Events That Can Be Attended, 1354. 21 is read off as one 2, then one 1 or 1211. The k-th Lexicographical String of All Happy Strings of Length n, 1418. Delete N Nodes After M Nodes of a Linked List, 1475. Jump Game II 46. Minimum Operations to Reduce X to Zero, 1661. Minimum Moves to Equal Array Elements II, 467. Minimum Swaps To Make Sequences Increasing, 828. Number of Sets of K Non-Overlapping Line Segments, 1623. I write here about computer science, programming, travel and much more. This is the best place to expand your knowledge and get prepared for your next interview. Leftmost Column with at Least a One, 1430. Largest Submatrix With Rearrangements. Construct Binary Search Tree from Preorder Traversal, 1010. There's a little redundancy just for clarity. Count the Number of Consistent Strings, 1685. Find Words That Can Be Formed by Characters, 1163. Minimum Swaps to Group All 1's Together, 1153. Note: Each term of the sequence of integers will be represented as a string. Check If a String Contains All Binary Codes of Size K, 1464. Given an integer n where 1 ≤ n ≤ 30, generate thenthterm of the count-and-say sequence. Given an integer n, generate the nth sequence. Verify Preorder Serialization of a Binary Tree, 340. 21 is read off as "one 2, then one 1" or 1211. Remove All Adjacent Duplicates In String, 1050. Design an Expression Tree With Evaluate Function, 1633. That means every integer (repeated continuously) is read off with its count value. Lowest Common Ancestor of a Binary Search Tree, 236. Find Smallest Common Element in All Rows, 1203. Count Square Submatrices with All Ones, 1279. The count-and-say sequence is the sequence of integers with the first five terms as following: 1; 11; 21; 1211; 111221; 1 is read off as "one 1" or 11. Sort Items by Groups Respecting Dependencies, 1209. Check if There is a Valid Path in a Grid, 1398. Substring with Concatenation of All Words, 34. Note: Elements in a triplet (a,b,c) must be in non-descending order. Contribute to haoel/leetcode development by creating an account on GitHub. List the Products Ordered in a Period, 1330. Thanks and Happy Coding! Find the Distance Value Between Two Arrays, 1389. Satisfiability of Equality Equations, 995. Optimize Water Distribution in a Village, 1170. Minimum Number of Arrows to Burst Balloons, 453. Maximum Number of Achievable Transfer Requests, 1602. Print Immutable Linked List in Reverse, 1269. Number of Connected Components in an Undirected Graph, 331. 38. Find Nearest Right Node in Binary Tree, 1604. Find Two Non-overlapping Sub-arrays Each With Target Sum, 1481. Find Critical and Pseudo-Critical Edges in Minimum Spanning Tree, 1491. Kth Smallest Element in a Sorted Matrix, 381. 21 is read off as "one 2, then one 1" or 1211.. Maximum Font to Fit a Sentence in a Screen, 1619. Minimum Number of Days to Disconnect Island, 1569. 11 is read off as two 1s or 21. And inside the pre or code section, you do not need to escape < > and &, e.g. Minimum Cost to Move Chips to The Same Position, 1218. Number of Ways to Reorder Array to Get Same BST, 1574. Lowest Common Ancestor of Deepest Leaves, 1129. Make Two Arrays Equal by Reversing Sub-arrays, 1461. Maximum of Absolute Value Expression, 1135. This is my solution in java. Binary Tree Zigzag Level Order Traversal, 105. 11 3. Longest Subarray of 1's After Deleting One Element, 1495. Multiply Strings 44. Maximum Number of Non-Overlapping Subarrays With Sum Equals Target, 1549. Check If Word Is Valid After Substitutions, 1005. Get the Second Most Recent Activity, 1371. Find the Start and End Number of Continuous Ranges, 1287. Smallest Range Covering Elements from K Lists, 659. Shortest Path in a Grid with Obstacles Elimination, 1295. Length of Longest Fibonacci Subsequence, 889. Maximum Number of Non-Overlapping Substrings, 1521. Minimum Swaps to Make Strings Equal, 1249. Shortest Subarray to be Removed to Make Array Sorted, 1576. In case more... By question description: "the slice contains at least two elements". Count And Say: The count-and-say sequence is the sequence of integers beginning as follows: 1, 11, 21, 1211, 111221, ... 1 is read off as one 1 or 11. Insufficient Nodes in Root to Leaf Paths, 1081. Checking Existence of Edge Length Limited Paths II, 1725. If you want to post some comments with code or symbol, here is the guidline. Online Majority Element In Subarray, 1160. Reverse Nodes in k-Group LeetCode Solution; My Interview Experience with Persistent Systems; 3Sum LeetCode Solution; Two Sum II LeetCode Solution; Two Sum LeetCode Solution; Count and Say LeetCode Solution; Valid Parentheses LeetCode Solution Build a recursive function count(n, last_character) that counts the number of valid strings of length n and whose first characters are not less than last_character. Longest Substring Without Repeating Characters, 17. Follow Mayukh Datta on WordPress.com. Reverse Nodes in k-Group LeetCode Solution; My Interview Experience with Persistent Systems; 3Sum LeetCode Solution; Two Sum II LeetCode Solution; Two Sum LeetCode Solution; Count and Say LeetCode Solution; Valid Parentheses LeetCode Solution Least Number of Unique Integers after K Removals, 1482. Element Appearing More Than 25% In Sorted Array, 1290. Maximum Score Words Formed by Letters, 1261. Remove Duplicates from Sorted Array II, 82. Number Of Rectangles That Can Form The Largest Square, 1727. tl;dr: Please put your code into a

YOUR CODEsection.. Hello everyone! 11 is read off as "two 1s" or 21. Preimage Size of Factorial Zeroes Function, 795. Find the Minimum Number of Fibonacci Numbers Whose Sum Is K, 1415. Design a Stack With Increment Operation, 1385. For every character c in the range [‘a’, ‘z’]: Add it to the list as many times as finalCount[c] Print the result; Implementation of Find Common Characters Leetcode Solution C++ Program Can Make Arithmetic Progression From Sequence, 1503. Minimum Remove to Make Valid Parentheses, 1255. n’th term in generated by reading (n-1)’th term. 111221 1 is read off as "one 1" or 11. Verify Preorder Sequence in Binary Search Tree, 297. Sort Integers by The Number of 1 Bits, 1358. Minimum Deletions to Make Character Frequencies Unique, 1648. C/C++ Coding Exercise – Count and Say – LeetCode Online Judge – Simulation of Number Sequences April 4, 2014 No Comments algorithms , beginner , c / c++ , code , code library , implementation , interview questions , leetcode online judge , math , programming languages , string Longest ZigZag Path in a Binary Tree, 1374. Minimum Cost to Connect Two Groups of Points, 1596. Find Median Given Frequency of Numbers, 579. Binary String With Substrings Representing 1 To N, 1026. Combination Sum II 41. 2. Minimum Number of Taps to Open to Water a Garden, 1327. Sum of Mutated Array Closest to Target, 1304. Count Unique Characters of All Substrings of a Given String, 862. Customer Placing the Largest Number of Orders, 597. 11 is read off as "two 1s" or 21. Longest Substring with At Least K Repeating Characters, 421. Find Minimum Time to Finish All Jobs, 1724. First Missing Positive 42. Your email address will not be published. 11 is read off as "two 1s" or 21. Minimum Possible Integer After at Most K Adjacent Swaps On Digits, 1509. Longest Continuous Increasing Subsequence, 689. Leetcode problems solutions. Find the Quiet Students in All Exams, 1413. Remove Duplicates from Sorted List II, 103. Check If a Number Is Majority Element in a Sorted Array, 1151. Flip Columns For Maximum Number of Equal Rows, 1074. Ways to Split Array Into Three Subarrays, 1713. Maximum Nesting Depth of Two Valid Parentheses Strings, 1121. Non-negative Integers without Consecutive Ones, 602. Find the n’th term in Look-and-say (Or Count and Say) Sequence. After reaching integer 1, evaluate its count and say string and return it. Count Negative Numbers in a Sorted Matrix, 1353. Find the Kth Smallest Sum of a Matrix With Sorted Rows, 1441. Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit, 1439. Sum Of Special Evenly-Spaced Elements In Array, 1717. Read N Characters Given Read4 II - Call multiple times, 159. 9:50. Minimum Difference Between Largest and Smallest Value in Three Moves, 1519. If you have a comment with lots of < and >, you could add the major part of your comment into a

YOUR COMMENTSsection. 3. Minimum Operations to Make a Subsequence, 1714. Last Substring in Lexicographical Order, 1168. When P == Q, the slice is a single-element slice as input[P] (or equally input[Q]). Minimum One Bit Operations to Make Integers Zero, 1612. Convert Sorted Array to Binary Search Tree, 109. Shortest Subarray with Sum at Least K, 865. Check Array Formation Through Concatenation, 1644. Minimum Swaps to Arrange a Binary Grid, 1538. Smallest Subtree with all the Deepest Nodes, 873. Sum of Nodes with Even-Valued Grandparent, 1317. Design Add and Search Words Data Structure, 235. Groups of Special-Equivalent Strings, 915. Split Two Strings to Make Palindrome, 1617. Minimum Deletion Cost to Avoid Repeating Letters, 1579. String Transforms Into Another String, 1155. Pseudo-Palindromic Paths in a Binary Tree, 1458. If you had some troubles in debugging your solution, please try to ask for help on StackOverflow, instead of here. Minimize Hamming Distance After Swap Operations, 1723. If you had some troubles in debugging your solution, please try to ask for help on StackOverflow, instead of here. How Many Apples Can You Put into the Basket, 1198. Widest Vertical Area Between Two Points Containing No Points, 1638. Lexicographically Smallest String After Applying Operations, 1628. Is d is accessable from other control flow statements? Number of Submatrices That Sum to Target, 1080. Customers Who Bought Products A and B but Not C, 1403. User Activity for the Past 30 Days II, 1144. Count Odd Numbers in an Interval Range, 1525. 2nd term is “11”. Find K-Length Substrings With No Repeated Characters, 1101. Minimum ASCII Delete Sum for Two Strings, 714. Decrease Elements To Make Array Zigzag, 1147. Maximum Product of Two Elements in an Array, 1465. Lowest Common Ancestor of a Binary Tree II, 1647. Find Valid Matrix Given Row and Column Sums, 1606. Prime Number of Set Bits in Binary Representation, 774. 1. Thanks for sharing its very informative for me. Compare Strings by Frequency of the Smallest Character, 1171. Find a Corresponding Node of a Binary Tree in a Clone of That Tree, 1381. Friend Requests I: Overall Acceptance Rate, 600. People Whose List of Favorite Companies Is Not a Subset of Another List, 1453. Number of Ways to Form a Target String Given a Dictionary, 1640. This problem can be solved in following steps :-Recursively start from the n-1 and go to 1. Replace All ? 21 is read off as "one 2, then one 1" or 1211. Nick White 11,643 views. The Earliest Moment When Everyone Become Friends, 1104. Minimize Rounding Error to Meet Target, 1059. Special Positions in a Binary Matrix, 1585. Maximum Sum of 3 Non-Overlapping Subarrays, 702. Thanks! Numbers With Same Consecutive Differences, 971. Find all unique triplets in the array which gives the sum of zero.

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