Package g2101_2200.s2119_a_number_after_a_double_reversal

Class Solution

java.lang.Object

g2101_2200.s2119_a_number_after_a_double_reversal.Solution

public class Solution
extends Object

2119 - A Number After a Double Reversal.<p>Easy</p> <p><strong>Reversing</strong> an integer means to reverse all its digits.</p> <ul> <li>For example, reversing <code>2021</code> gives <code>1202</code>. Reversing <code>12300</code> gives <code>321</code> as the <strong>leading zeros are not retained</strong>.</li> </ul> <p>Given an integer <code>num</code>, <strong>reverse</strong> <code>num</code> to get <code>reversed1</code>, <strong>then reverse</strong> <code>reversed1</code> to get <code>reversed2</code>. Return <code>true</code> <em>if</em> <code>reversed2</code> <em>equals</em> <code>num</code>. Otherwise return <code>false</code>.</p> <p><strong>Example 1:</strong></p> <p><strong>Input:</strong> num = 526</p> <p><strong>Output:</strong> true</p> <p><strong>Explanation:</strong> Reverse num to get 625, then reverse 625 to get 526, which equals num.</p> <p><strong>Example 2:</strong></p> <p><strong>Input:</strong> num = 1800</p> <p><strong>Output:</strong> false</p> <p><strong>Explanation:</strong> Reverse num to get 81, then reverse 81 to get 18, which does not equal num.</p> <p><strong>Example 3:</strong></p> <p><strong>Input:</strong> num = 0</p> <p><strong>Output:</strong> true</p> <p><strong>Explanation:</strong> Reverse num to get 0, then reverse 0 to get 0, which equals num.</p> <p><strong>Constraints:</strong></p> <ul> <li><code>0 <= num <= 10⁶</code></li> </ul>

Constructor Summary

Constructors

Constructor	Description
Solution()

Method Summary

Modifier and Type	Method	Description
boolean	isSameAfterReversals(int num)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Solution

public Solution()

Method Details

isSameAfterReversals

public boolean isSameAfterReversals(int num)