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publicclassSolution{privatestaticBigDecimalone=newBigDecimal(1);privatestaticbooleanisPrime(String n){BigIntegerinteger=newBigInteger(n);returninteger.isProbablePrime(1); }publicstaticvoidmain(String[] args)throwsIOException {BufferedReaderbufferedReader=newBufferedReader(newInputStreamReader(System.in));Stringn=...
Java String ReverseSolve ProblemA palindrome is a word, phrase, number, or other sequence of characters which reads the same backward or forward.Given a string A, print Yes if it is a palindrome, print No otherwise.Constraint: A will have at most 50 lower case English letters.Sample Input...
// 题目:反转字符串// 给定一个字符串s,将其反转并返回。publicclassSolution{publicStringreverseString(Strings){char[]chars=s.toCharArray();intleft=0;intright=chars.length-1;while(left<right){chartemp=chars[left];chars[left]=chars[right];chars[right]=temp;left++;right--;}returnnewString(chars...
HackerRank in a String! Java JS C# O(n) O(1) Easy 20 Pangrams Java C# O(n) O(1) Easy 20 Weighted Uniform Strings Java C# O(n) O(n) Easy 20 Separate the Numbers Java C# O(n) O(n) Easy 20 Funny String Java C# O(n) O(n) Easy 25 Gemstones Java C# O(n...
String: Welcome to HackerRank's Java tutorials! Double: 3.1415 Int: 42 基本就是上面的如何跳过nextLine之前的换行。 publicstaticvoidmain(String[] args){Scannerscan=newScanner(System.in);inti=scan.nextInt();doubled=scan.nextDouble(); scan.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");Strin...
publicclassSolution{publicStringreverseString(Strings){returnnewStringBuilder(s).reverse().toString();// 使用StringBuilder反转字符串}} 1. 2. 3. 4. 5. 4. 答题技巧 在面试中,时间管理非常重要。确保在答题时考虑每一部分的问题,合理分配时间。练习常见的面试题型,以下是一个常见的算法问题示例: ...
HackerRank in a String! Java JS C# O(n) O(1) Easy 20 Pangrams Java C# O(n) O(1) Easy 20 Weighted Uniform Strings Java C# O(n) O(n) Easy 20 Separate the Numbers Java C# O(n) O(n) Easy 20 Funny String Java C# O(n) O(n) Easy 25 Gemstones Java C# O(n...
N/A [HackerRank]. Change to Anagram.java Easy [String] Java 211 N/A Implement Queue using Stacks.java Easy [Design, Stack] Java 212 N/A Basic Calculator.java Hard [Binary Tree, Expression Tree, Math, Minimum Binary Tree, Stack] Java 213 N/A Word Squares.java Hard [Backtracking, Trie...
N/A [HackerRank]. Change to Anagram.java Easy [String] Java 211 N/A Implement Queue using Stacks.java Easy [Design, Stack] Java 212 N/A Basic Calculator.java Hard [Binary Tree, Expression Tree, Math, Minimum Binary Tree, Stack] Java 213 N/A Word Squares.java Hard [Backtracking, Trie...