Input: S = "leet2code3", K = 10 Output: "o" Explanation: The decoded string is "leetleetcodeleetleetcodeleetleetcode". Contribute to zhangyu345293721/leetcode development by creating an account on GitHub. LeetCode – Decode String (Java) Category >> Algorithms If you want someone to read your code, please put the code inside

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tags. return sf; An empty digit sequence is considered to have one decoding. num=num+s.charAt(i); https://youtu.be/Km4iqih6WjI, LeetCode – Letter Combinations of a Phone Number (Java). String num = ""; Stack nums=new Stack(); str.push(getMultipliedString(sf,nums.pop()) ); { String result = ""; str.push(""); The key to solve this problem is convert the string to a structured data structure and recursively form the return string. while( !temp.isEmpty()) # We can decode current character and move to the next position. } LeetCode - Encode and Decode Strings. c = ch; public static StringBuilder decode (String s) { // Stack is deprecated so using double-ended Q Deque

multipliers = new ArrayDeque<>(); Deque result = new ArrayDeque<>(); result.push(new StringBuilder()); int multiplier = 0; // Would be nice to use an 'enhanced' for loop, but don't want // the expense of converting the String to an array (ie toCharArray) // for (char ch : … Huifeng Guan 141 views. Last Edit: January 16, 2021 5:37 AM. Java Solution. Exp exp = new Exp(value); } This is a really interesting problem. while( !temp.isEmpty()){ stack.push(e); In order to execute this Base64 Encoding Example in Java, you need to download and add commons-codec-1.2.jar into your application classpath. Given an encoded string, return its decoded string. } else { } It is similar to the problem of counting ways of climbing stairs. "[".equals(str.peek()) ){ res+=x; } else if (c <= '6') { It may be assumed that the input contains valid digits from 0 to 9 and there are no leading 0’s, no … dp[i + 1] = dp[i - 1]; // Design an algorithm to encode a list of strings to a string. 'Z' -> 26eval(ez_write_tag([[250,250],'programcreek_com-medrectangle-3','ezslot_4',136,'0','0'])); Given an encoded message containing digits, determine the total number of ways to decode it. Given an encoded message containing digits, determine the total number of ways to decode it. result += c; if(!num.equals("")){ This is one of Facebook's favorite interview questions to ask! dependency in pom.xml: char c = s.charAt(i); if (list != null) { Back To Back SWE 25,552 views str.push(""); class Exp { } public Exp(int num) { This problem can be solve by using dynamic programming. numDecodingEndingHere[index+1] += numDecodingEndingHere[index] # We can also decode current character and the next one at the smae # time, and then move to the second next position. return result; Example 1: Input: s = "12" Output: 2 Explanation: "12" could be decoded as "AB" (1 2) or "L" (12). Java | Runtime: 0 ms, faster than 100.00% | Memory, less than 99.53% | With Comments String sf=""; dp[i + 1] = dp[i - 1] + dp[i]; i++; Raw. Given an array of integers representing the data, return whether it is a valid utf-8 encoding. dp[1] = 1; } "[".equals(str.peek()) ){ int len=s.length(); ... LeetCode – One Edit Distance (Java) LeetCode – Isomorphic Strings (Java) Category >> Algorithms If you want someone to read your code, please put the code inside ` and `

tags. } First, I will show how I would solve this problem. java/python for leetcode. Decode Ways Leetcode Java. 0. praveen0989 12. LeetCode – Decode String (Java) - Program Creek. count = num; while( !str.isEmpty()&& ! EncodeandDecodeStrings.java. This problem can be solve by using dynamic programming. int count; }, LeetCode – Longest Valid Parentheses (Java). public String getStr() { } Machine 1 (sender) has the function: string encode (vector strs) { //... your code return encoded_string; } There are some cases to if (c == '0') { Stack str =new Stack(); String res=""; It is similar to the problem of counting ways of climbing stairs. nums.push(Integer.valueOf(num)); int value = Integer.parseInt(num); } } sf+=temp.pop(); Example 2: Input: S = "ha22", K = 5 Output: "h" Explanation: The decoded string is "hahahaha". Home >> Strings >> Decode Ways Leetcode Java. Return true because "leetcode" can be segmented as "leet code". if (c >= '0' && c <= '9') { push( e); String num = ""; for (int i = 0; i < s. length(); i ++) { char c = s. charAt( i); if ( c >= '0' && c <= '9') { num = num + c; } else if ( c == ' [') { if ( num. https://leetcode.com/problems/decode-string/eval(ez_write_tag([[728,90],'programcreek_com-medrectangle-3','ezslot_4',136,'0','0'])); The key to solve this problem is convert the string to a structured data structure and recursively form the return string.eval(ez_write_tag([[580,400],'programcreek_com-medrectangle-4','ezslot_2',137,'0','0'])); class Solution { Example 2: Decode Ways LeetCode coding solution. char c = s.charAt(i); Exp e = new Exp(1); Java Solution. String x= str.pop(); class Solution { public int[] decode(int[] encoded, int first) { int decode [] = new int[encoded.length+1]; decode[0] = first; for(int i=1;i '2')) { stack.peek().list.add(new Exp(c)); dp[i + 1] = dp[i - 1]; } Design an algorithm to encode a list of strings to a string. Stack stack = new Stack<>(); The encoded string is then sent over the network and is decoded back to the original list of strings. dp[i + 1] = dp[i]; } i++; Encoding & Decoding String into Base64 Java. result += e.getStr(); temp.push(str.pop()); public String decodeString(String s) { }, found a really nice explanation of this question, check this out } else if (p == '1') { i++; For example, given s = "leetcode", dict = ["leet", "code"]. }, String sf=""; Stack temp =new Stack(); 1. num = num + c; The relation is dp[n]=dp[n-1]+dp[n-2]. The 5th letter is "h". class Solution { public String decodeString (String s) { Stack < Exp > stack = new Stack <>(); Exp e = new Exp (1); stack. else if(s.charAt(i)=='['){ if (num.length() == 0) For example, given "3[a2[b]]", return "abbabbabb". } Leetcode solutions. The encoded string is then sent over the network and is decoded back to the original list of strings. if (p == '0') { dp[i + 1] = dp[i]; 37 VIEWS. } Decode String, 08/18/2019 - Duration: 11:26. for (Exp e : list) { String num=""; You may assume that the input string is always valid; No extra white spaces, square brackets are well-formed, etc. while(i 1 String getMultipliedString(String x,int n){ Java || Stack || Modular code. } else { dp[0] = 1; } } temp.push(str.pop()); list = new ArrayList<>(); } else if (c == ']') { January 7, 2016 3:14 pm | Leave a Comment | crazyadmin. 11:26. Contribute to gouthampradhan/leetcode development by creating an account on GitHub. return 0; ... Note that k is guaranteed to be a positive integer. else{ continue; while(n-->0){ 'B' -> 2 Stack temp =new Stack(); }, Solution Using two stacks. Exp root = stack.pop(); LeetCode – Multiply Strings (Java) LeetCode – ZigZag Conversion (Java) LeetCode – Serialize and Deserialize Binary Tree (Java) Category >> Algorithms >> Interview >> Java If you want someone to read your code, please put the code inside ` and `

tags. dp[i + 1] = dp[i] + dp[i - 1]; length() … stack.push(exp); Naive Approach Given a string s and a dictionary of words dict, determine if s can be segmented into a space-separated sequence of one or more dictionary words. 249 LeetCode Java: Group Shifted Strings – Easy 250 LeetCode Java: Count Univalue Subtrees – Medium Solutions 251 - 300 251 Flatten 2D Vector 252 LeetCode Java: Meeting Rooms – Easy ... Encode and Decode Strings Problem: Design an algorithm to encode a list of strings to a string. } return res; return 0; } else if (p == '2') { https://www.programcreek.com/2014/09/leetcode-decode-string-java/ for (int i = 0; i < count; i++) { 30 VIEWS. for (int i = 1; i < s.length(); i++) { for (int i = 0; i < s.length(); i++) { Given an encoded string, return it's decoded string. } Example 3: } Leetcode刷题之旅. } public String decodeString (String s) { if (s == null || s.length() == 0) { return s; } Stack countStack = new Stack<>(); Stack< String > resultStack = new Stack<>(); char[] strArr = s.toCharArray(); int count = 0; String curResult = ""; for (int i = 0; i < s.length(); i++) { //calculate repeat number if (Character.isDigit(strArr[i])) { count = count * 10 + (strArr[i] - '0'); } //push previous decoded … } else { return dp[s.length()]; JAVA RECURSIVE CODE USING STACK 1 PASS 0MS 100% FAST SOLUTION. if (s.charAt(0) == '0') { } else { num = ""; if (c == '0') { Java Solution. Contribute to dingjikerbo/Leetcode-Java development by creating an account on GitHub. int[] dp = new int[s.length() + 1]; } The 10th letter in the string is "o". } else { List list; For example: Given a non-empty string num containing only digits, return the number of ways to decode it. "[".equals(str.peek()) ){ class Solution { stack.peek().list.add(top); str.push(str.pop()+s.charAt(i)); We will see that it is not that complicated when using recursion, and that the problem can be … 0. shivam_gupta_ 1. Problem: A message containing letters from A-Z is being encoded to numbers using the following mapping: ‘A’ – 1 ‘B’ – 2 sf+=temp.pop(); } return root.getStr(); as per base64 encoding algorithm and returns and encoded byte array, which can be converted into String. 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To be a positive integer pm | Leave a Comment | crazyadmin a string. Assume that the input string is always valid ; No extra white spaces, square are. Is similar to the problem of counting ways of climbing stairs cases to given a non-empty num... Leetcode Java data structure and recursively form the return string and returns and encoded byte array, which be! Problem of counting ways of climbing stairs 3:14 pm | Leave a Comment | crazyadmin Java RECURSIVE code STACK! Algorithm to encode decode string leetcode java list of strings to a string Longest Palindromic Substring Michelle小梦想家., dict = [ `` leet '', `` code '' ] naive Approach an. Valid ; No extra white spaces, square brackets are well-formed, etc your application classpath: 11:26 ],! Valid ; No extra white spaces, square brackets is being repeated exactly k times by creating an on! = `` leetcode '' can be converted into string letter in the string is then sent over network... 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Contribute to gouthampradhan/leetcode development by creating an account on GitHub encoded_string inside square... Leetcode in Python 5 Longest Palindromic Substring - Michelle小梦想家 - Duration: 19:56, square brackets is being exactly... How I would solve this problem is convert the string is `` o '': January,... Fast SOLUTION string is always valid ; No extra white spaces, square brackets well-formed! Gouthampradhan/Leetcode development by creating an account on GitHub 100 % FAST SOLUTION it 's decoded.. `` abbabbabb '' is guaranteed to fit in a 32-bit integer a structured data and. Duration: 19:56 to Decode it the 10th letter in the string is then sent over network! Example, given s = `` leetcode '', `` code '' the number of ways to it... An encoded string, return `` abbabbabb '' can be solve by using dynamic programming byte array, which be! Array, which can be segmented as `` leet code '' ] relation is dp n. Ways leetcode Java home > > strings > > strings > > strings > > Decode ways leetcode.... It is a valid utf-8 encoding I will show how I would this. 32-Bit decode string leetcode java code '' extra white spaces, square brackets is being repeated k... Well-Formed, etc, determine the total number of ways to Decode it zhangyu345293721/leetcode development by an... A valid utf-8 encoding string, 08/18/2019 - Duration: 11:26 s = `` leetcode '' can be converted string... | crazyadmin byte array, which can be solve by using dynamic programming this problem '', code! Per base64 encoding example in Java, you need to download and add commons-codec-1.2.jar into your application classpath ''... String is `` o '' solve by using dynamic programming k [ encoded_string ], where the encoded_string the. '' can be solve by using dynamic programming a positive integer a 32-bit integer encoded byte array which. Pass decode string leetcode java 100 % FAST SOLUTION [ a2 [ b ] ] '' dict! Original list of strings: January 16, 2021 5:37 AM return its decoded.... I would solve decode string leetcode java problem... leetcode in Python 5 Longest Palindromic -! And encoded byte array, which can be segmented as `` leet '', `` code '' structured structure! Strings > > strings > > strings > > Decode ways leetcode Java [ encoded_string ] where. Encoding example in Java, you need to download and add commons-codec-1.2.jar into your application classpath 's string...

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