New update is available. Click here to update.

Solve problems & track your progress

Checkout your overall progress in every topic here

Become

Sensei

in DSA topics

Open the topic and solve more problems associated with it to improve your skills

Check out the skill meter for every topic

See how many problems you are left with to solve for cracking any stage. Score more than zero to get your progress counted.

Problem

Submissions

Binary to Decimal

Contributed by

Yash_5830

Last Updated: 23 Feb, 2023

Easy

0/40

Avg time to solve 15 mins

Success Rate 80 %

16 upvotes

Problem Statement

Ninja is given a binary number as a string ‘S’ of size ‘N’, he is asked to convert it into its decimal equivalent (as an Integer) and print it.

Note:

A binary string is a string in which all characters are either ‘1’ or ‘0’.

Detailed explanation ( Input/output format, Notes, Images )

Input Format:

The first line contains an integer 'T' which denotes the number of test cases or queries to be run.

The first line of each test case contains a single integer ‘N’ denoting the size of the given string.

The second line of each test case contains the string ‘S’  .

Output Format:

For each test case, print the corresponding Decimal number (as Integer).

The output of each test case will be printed in a separate line.

Note:

You do not need to input or print anything, as it has already been taken care of. Just implement the given function.

Constraints:

1 <= T <= 5 
1 <= N <= 30

 Where ‘T’ is the total number of test cases and ‘N’ is the size of the given string.

 The second line of each test case contains the string ‘S’.

Time limit: 1 sec

Sample Input 1:

Sample Output 1:

85
11

Explanation of Sample Input 1:

Test case 1:

The Decimal equivalent of the Binary number “1010101” is 85.

Test case 2:
The Decimal equivalent of the Binary number “1011” is 11.

Sample Input 2:

Sample Output 2:

15
0

Explanation of Sample Input 2:

Test case 1:

The Decimal equivalent of the Binary number “1111” is 15.

Test case 2:

The Decimal equivalent of the Binary number “0” is 0.

Auto

Console