Cody Problem 59841 involved counting the ways that 
can be written as the sum of two unit fractions (those with a numerator of 1). For example, the number 1/2 can be written as 1/3+1/6 and 1/4+1/4, and the number 1/9 can be written as 1/18+1/18, 1/12+1/36, and 1/10+1/90.
can be written as the sum of two unit fractions (those with a numerator of 1). For example, the number 1/2 can be written as 1/3+1/6 and 1/4+1/4, and the number 1/9 can be written as 1/18+1/18, 1/12+1/36, and 1/10+1/90. Write a function to list the ways can be written as the sum of two unit fractions. The output should be a two-column matrix of the denominator pairs with the smaller denominator in the first column and the larger in the second. The values in the first column should be sorted in increasing order. For example, if n = 9, then the output should be [10 90; 12 36; 18 18].
can be written as the sum of two unit fractions. The output should be a two-column matrix of the denominator pairs with the smaller denominator in the first column and the larger in the second. The values in the first column should be sorted in increasing order. For example, if n = 9, then the output should be [10 90; 12 36; 18 18].Solution Stats
Solution Comments
Show comments
Loading...
Problem Recent Solvers8
Suggested Problems
-
Given an unsigned integer x, find the largest y by rearranging the bits in x
2051 Solvers
-
Project Euler: Problem 2, Sum of even Fibonacci
2886 Solvers
-
Find the sum of the elements in the "second" diagonal
1204 Solvers
-
Return unique values without sorting
1011 Solvers
-
Find the sides of an isosceles triangle when given its area and height from its base to apex
2204 Solvers
More from this Author323
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
