Question

Two operations digit sum and add to find the minimum number geeksforgeeks

Answer 1

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Minimum number of operation required to convert number x into y
Given a initial number x and two operations which are given below:

Multiply number by 2.
Subtract 1 from the number.
The task is to find out minimum number of operation required to convert number x into y using only above two operations. We can apply these operations any number of times.

Constraints:
1 <= x, y <= 10000

Example:

Input : x = 4, y = 7
Output : 2
We can transform x into y using following
two operations.
1. 4*2 = 8
2. 8-1 = 7

Input : x = 2, y = 5
Output : 4
We can transform x into y using following
four operations.
1. 2*2 = 4
2. 4-1 = 3
3. 3*2 = 6
4. 6-1 = 5
Answer = 4
Note that other sequences of two operations
would take more operations.

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