Package g0001_0100.s0007_reverse_integer

Class Solution

java.lang.Object

g0001_0100.s0007_reverse_integer.Solution

public class Solution
extends Object

7 - Reverse Integer.<p>Medium</p> <p>Given a signed 32-bit integer <code>x</code>, return <code>x</code> <em>with its digits reversed</em>. If reversing <code>x</code> causes the value to go outside the signed 32-bit integer range <code>[-2³¹, 2³¹ - 1]</code>, then return <code>0</code>.</p> <p><strong>Assume the environment does not allow you to store 64-bit integers (signed or unsigned).</strong></p> <p><strong>Example 1:</strong></p> <p><strong>Input:</strong> x = 123</p> <p><strong>Output:</strong> 321</p> <p><strong>Example 2:</strong></p> <p><strong>Input:</strong> x = -123</p> <p><strong>Output:</strong> -321</p> <p><strong>Example 3:</strong></p> <p><strong>Input:</strong> x = 120</p> <p><strong>Output:</strong> 21</p> <p><strong>Example 4:</strong></p> <p><strong>Input:</strong> x = 0</p> <p><strong>Output:</strong> 0</p> <p><strong>Constraints:</strong></p> <ul> <li><code>-2³¹ <= x <= 2³¹ - 1</code></li> </ul>

Constructor Summary

Constructors

Constructor	Description
Solution()

Method Summary

Modifier and Type	Method	Description
int	reverse(int x)

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

reverse

public int reverse(int x)