Code : Min Steps to 1
1.) Subtract 1 from it. (n = n - 1) ,
2.) If its divisible by 2, divide by 2.( if n % 2 == 0, then n = n / 2 ) ,
3.) If its divisible by 3, divide by 3. (if n % 3 == 0, then n = n / 3 ).
The first and the only line of input contains an integer value, 'n'.
Print the minimum number of steps.
1 <= n <= 200
Time Limit: 1 sec
4
2
For n = 4
Step 1 : n = 4 / 2 = 2
Step 2 : n = 2 / 2 = 1
7
3
For n = 7
Step 1 : n = 7 - 1 = 6
Step 2 : n = 6 / 3 = 2
Step 3 : n = 2 / 2 = 1
int countMinStepsToOne(int n){
if(n<=1)return 0;
int x=countMinStepsToOne(n-1); int y=INT_MAX,z=INT_MAX; if(n%2==0) y=countMinStepsToOne(n/2); if(n%3==0)z=countMinStepsToOne(n/3); return min(x,min(y,z))+1;}
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