Class Solution
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public final class Solution
397 - Integer Replacement.
Medium
Given a positive integer
n
, you can apply one of the following operations:If
n
is even, replacen
withn / 2
.If
n
is odd, replacen
with eithern + 1
orn - 1
.
Return the minimum number of operations needed for
n
to become1
.Example 1:
Input: n = 8
Output: 3
Explanation: 8 -> 4 -> 2 -> 1
Example 2:
Input: n = 7
Output: 4
Explanation: 7 -> 8 -> 4 -> 2 -> 1 or 7 -> 6 -> 3 -> 2 -> 1
Example 3:
Input: n = 4
Output: 2
Constraints:
<code>1 <= n <= 2<sup>31</sup> - 1</code>
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Constructor Summary
Constructors Constructor Description Solution()
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Method Summary
Modifier and Type Method Description final Integer
integerReplacement(Integer n)
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Method Detail
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integerReplacement
final Integer integerReplacement(Integer n)
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