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use std::io ;
use itertools::Itertools ;
fn to_string( all_chars : &Vec<char> ) -> String {
let mut output : String = String::new( ) ;
for c in all_chars {
output.push( *c ) ;
}
output
}
fn main() {
println!("Enter a word, preferably in capital letters only!");
let mut inline : String = String::new( ) ;
io::stdin( ).read_line( &mut inline ).unwrap( ) ;
let entered_line : &str = &*inline ;
let mut letters : Vec<char> = Vec::new( ) ;
let changed = entered_line.trim( ) ;
let compared_to = changed.to_string( ) ;
for c in changed.chars( ) {
letters.push( c ) ;
}
let len : usize = letters.len( ) ;
let mut all_permu : Vec<String> = Vec::new( ) ;
for ve in letters.into_iter().permutations( len ) {
let word : String = to_string( &ve ) ;
let found = all_permu.iter( ).find( | &st | *st == word ) ;
if found.is_none( ) {
all_permu.push( word ) ;
}
}
all_permu.sort( ) ;
println!("{}" , all_permu.iter( ).position( | w | *w ==
compared_to ).unwrap( ) + 1) ;
}
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