Package g0601_0700.s0650_2_keys_keyboard

Class Solution

java.lang.Object
g0601_0700.s0650_2_keys_keyboard.Solution
public class Solution extends java.lang.Object
650 - 2 Keys Keyboard.

Medium

There is only one character 'A' on the screen of a notepad. You can perform two operations on this notepad for each step:

  • Copy All: You can copy all the characters present on the screen (a partial copy is not allowed).
  • Paste: You can paste the characters which are copied last time.

Given an integer n, return the minimum number of operations to get the character 'A' exactly n times on the screen.

Example 1:

Input: n = 3

Output: 3

Explanation:

Initially, we have one character ‘A’.

In step 1, we use Copy All operation.

In step 2, we use Paste operation to get ‘AA’.

In step 3, we use Paste operation to get ‘AAA’.

Example 2:

Input: n = 1

Output: 0

Constraints:

  • 1 <= n <= 1000

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    minSteps(int n)
     

    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

    • minSteps

      public int minSteps(int n)