Input is a given string. Output is the number of ways to rearrange the string.
The number of rearranged different strings for the last case ('EULER') is 59, not 119.
A valid and essentially the same problem exists: http://www.mathworks.com/matlabcentral/cody/problems/2394-permutation
Add two numbers
construct matrix with identical rows
Find the number of rectangles
odd number odd sum
How many ways to write
How many ways to write a number
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