Src. Provide debug output

diff --git a/src/main.rs b/src/main.rs
index a3d96977447a35970e4c6e796455b05d28660fde..aa284b1590d3ea9cc0c530102d26f389c01bac13 100644 (file)
--- a/src/main.rs
+++ b/src/main.rs
@@ -7,6 +7,8 @@ use std::io::prelude::*; // Bring `std::io::BufRead` in scope
 use statrs::distribution::{Exp, ContinuousCDF}; // Continuous needed for pdf
 // use statrs::statistics::Distribution;
 
+const DEBUG: bool = false;
+
 fn input() -> Vec<String> {
     // Consider datastructure some list of strings
     let stdin = io::stdin();
@@ -35,9 +37,14 @@ fn normalize(mut arg: Vec<f64>) -> Vec<f64> {
 fn delta(n: i32) -> Vec<f64> {
     let mut prio: Vec<f64> = Vec::new();
     const MEAN: f64 = 1.0; // unessential thanks to normalization
+    if DEBUG { eprint!("Delta: ") }
     for i in 1..n + 1 {
        prio.push(MEAN);
+       if DEBUG {
+           eprint!("i = {}, x = {:.2}; ", i, MEAN);
+       }
     }
+    if DEBUG { eprintln!("\x08\x08."); }
     prio.reverse();
     normalize(prio)
 }
@@ -46,11 +53,16 @@ fn exp(n: i32) -> Vec<f64> {
     const RATE: f64 = 1.0; // rate is unessential thanks to normalization
     let mut prio: Vec<f64> = Vec::new();
     let dist = Exp::new(RATE).unwrap();
+    if DEBUG { eprint!("Exp: ") }
     for i in 1..n + 1 {
        let f = i as f64 / (n as f64 + 1.0);
        let x = dist.inverse_cdf(f);
+       if DEBUG {
+           eprint!("i = {}, f = {:.2}, x = {:.2}; ", i, f, x);
+       }
        prio.push(x);
     }
+    if DEBUG { eprintln!("\x08\x08."); }
     prio.reverse();
     normalize(prio)
 }
@@ -63,9 +75,12 @@ fn main() {
     let _prio1 = delta(num);
     let prio2 = exp(num);
 
+    if DEBUG {
+       for l in ranked.iter() {
+           eprint!("{}, ", l);
+       }
+       eprintln!("\x08\x08.");
     }
-    eprintln!("");
-    eprintln!("That was {} items: {}", num, prio[0]);
 
     output(&prio2, &ranked);