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Fraction to Recurring Decimal

Explore how to convert a fraction given as numerator and denominator into its string decimal representation, including identifying and enclosing repeating decimals in parentheses. This lesson helps you understand and implement solutions using hash maps to manage repeating fractional parts effectively.

Statement

Given the two integer values of a fraction, numerator and denominator, implement a function that returns the fraction in string format. If the fractional part repeats, enclose the repeating part in parentheses.

Constraints:

  • denominator !=0!= 0
  • 105-10^{5} \leq numerator, denominator 1051\leq 10^{5} - 1

Examples

Understand the problem

Let’s take a moment to make sure you’ve correctly understood the problem. The quiz below helps you check if you’re solving the correct problem:

Fraction to Recurring Decimal

1.

Select the correct answer for the fraction given below:

20/4

A.

“2”

B.

“3”

C.

“4”

D.

“5”


1 / 3

Figure it out!

We have a game for you to play. Rearrange the logical building blocks to develop a clearer understanding of how to solve this problem.

Sequence - Vertical
Drag and drop the cards to rearrange them in the correct sequence.

1
2
3
4
5
6
7

Try it yourself

Implement your solution in the following coding playground.

Java
usercode > Solution.java
import java.util.*;
public class Solution{
public static String fractionToDecimal (int numerator, int denominator) {
// Replace this placeholder return statement with your code
return "";
}
}
Fraction to Recurring Decimal