一、题目 Determine whether an integer is a palindrome. An integer is a palindrome when it reads the same backward as forward. Example 1: Input: 121 Output: true Example 2: Input: -121 Output: false Explanation: From left to right, it reads -121. From right to left, it becomes 121-....
leetcode 第九题 Palindrome Number(java) Palindrome Number time=434ms 负数不是回文数 public class Solution { public boolean isPalindrome(int x) { int palindrome=0; int revers=x; if(revers<0) return false; else{ while(revers>0){ int m=revers%10; palindrome=m+palindrome*10; revers=revers/...
代码class Solution { public boolean isPalindrome(int x) { if(x<0) {return false; } if(x==0) {return true; } StringBuilder in = new StringBuilder(); int a = x; while(a!=0) {in.append(a%10);a/=10; } String o = String.valueOf(x); if(o.equals(in.toString())) {return ...
classSolution {publicbooleanisPalindrome(intx) {if(x<0//negative number|| (x%10 == 0 && x != 0))//the check"x == reverseNum/10" has one exception: reverseNum is one-bit number but x isn't, this case only exist in x%10 == 0 && x != 0returnfalse;intreverseNum = 0;whil...
public boolean isPalindrome(int x) { if(x<0) { return false; } if(x==0) { return true; } StringBuilder in = new StringBuilder(); int a = x; while(a!=0) { in.append(a%10); a/=10; } String o = String.valueOf(x); ...
* In Java How to Check if Number/String is Palindrome or not? */ public class CrunchifyFindPalindromeNumber { public static void main(String[] args) { crunchifyFindPalindromeUsingForLoop(24642); crunchifyFindPalindromeUsingWhileLoop(34567); crunchifyFindPalindromeUsingForLoop(987656789); crunchify...
Check Prime Number using Java Program //Java program for Prime Numberimportjava.util.*;publicclassPrime{publicstaticvoidmain(Stringargs[]){intnum,loop;booleanflag=false;Scanner bf=newScanner(System.in);//input an integer numberSystem.out.print("Enter any integer number: ");num=bf.nextInt();...
In Java, number programs such asArmstrongnumber,Primenumber, andPalindromenumber are frequently asked by the interviewer. Unlike other number programs,the Economical numberis not frequently asked by the interviewers. An economical number is a number whose number of digits in the prime factorization wit...
Best way to generate prime number in Java Let’s get started: Create class CrunchifyIsPrimeAndGeneratePrime.java create crunchifyIsPrimeNumber(int) to check if number is prime? create crunchifyIsPrimeNumberMethod2(int) to check number is prime or not using diff approach ...
package javaLeetCode_primary; import java.util.Scanner; import java.util.Stack; public class PalindromeNumber_9 { public static void main(String[] args) { @SuppressWarnings("resource") Scanner input = new Scanner(System.in); System.out.println("Please input the integer:"); ...