Package g1301_1400.s1342_number_of_steps_to_reduce_a_number_to_zero

Class Solution

java.lang.Object

g1301_1400.s1342_number_of_steps_to_reduce_a_number_to_zero.Solution

public class Solution
extends Object

1342 - Number of Steps to Reduce a Number to Zero.<p>Easy</p> <p>Given an integer <code>num</code>, return <em>the number of steps to reduce it to zero</em>.</p> <p>In one step, if the current number is even, you have to divide it by <code>2</code>, otherwise, you have to subtract <code>1</code> from it.</p> <p><strong>Example 1:</strong></p> <p><strong>Input:</strong> num = 14</p> <p><strong>Output:</strong> 6</p> <p><strong>Explanation:</strong></p> <p>Step 1) 14 is even; divide by 2 and obtain 7.</p> <p>Step 2) 7 is odd; subtract 1 and obtain 6.</p> <p>Step 3) 6 is even; divide by 2 and obtain 3.</p> <p>Step 4) 3 is odd; subtract 1 and obtain 2.</p> <p>Step 5) 2 is even; divide by 2 and obtain 1.</p> <p>Step 6) 1 is odd; subtract 1 and obtain 0.</p> <p><strong>Example 2:</strong></p> <p><strong>Input:</strong> num = 8</p> <p><strong>Output:</strong> 4</p> <p><strong>Explanation:</strong></p> <p>Step 1) 8 is even; divide by 2 and obtain 4.</p> <p>Step 2) 4 is even; divide by 2 and obtain 2.</p> <p>Step 3) 2 is even; divide by 2 and obtain 1.</p> <p>Step 4) 1 is odd; subtract 1 and obtain 0.</p> <p><strong>Example 3:</strong></p> <p><strong>Input:</strong> num = 123</p> <p><strong>Output:</strong> 12</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
int	numberOfSteps(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

numberOfSteps

public int numberOfSteps(int num)