add results histogram

main.go

@@ -373,6 +373,7 @@ func sampleFromState(state State) VotesForEachParty {
 	}
 }
 
+/* Simulate election */
 func simulateElection(states []State) int {
 
 	republican_seats := 0
@@ -383,6 +384,36 @@ func simulateElection(states []State) int {
 	return republican_seats
 }
 
+/* Histogram */
+func barString(n int) string {
+	str := ""
+	for i := 0; i < n; i++ {
+		str += "█"
+	}
+	return str
+}
+
+func printElectoralCollegeHistogram(samples []int) {
+
+	histogram := [538]int{}
+	for _, sample := range samples {
+		histogram[sample]++
+	}
+
+	max_count := 0
+	for _, count := range histogram {
+		if count > max_count {
+			max_count = count
+		}
+	}
+
+	for i, count := range histogram {
+		bar_length := (count * 100) / max_count // Assuming max_count bar length is 50 characters
+		fmt.Printf("[ %2d, %4d): %s %d\n", i, i+1, barString(bar_length), count)
+	}
+
+}
+
 func main() {
 	states, err := readStates()
 	if err != nil {
@@ -390,19 +421,22 @@ func main() {
 		return
 	}
 
-	n_sims := 10_000
+	n_sims := 100_000
 
 	printStates(states)
 
 	p_republicans := 0.0
+	results := make([]int, n_sims)
 	for i := 0; i < n_sims; i++ {
 		republican_seats := simulateElection(states)
+		results[i] = republican_seats
 		if republican_seats >= 270 {
 			p_republicans++
 		}
-		fmt.Printf("%d - %t\n", republican_seats, republican_seats >= 270)
+		// fmt.Printf("%d - %t\n", republican_seats, republican_seats >= 270)
 	}
 	p_republicans = p_republicans / float64(n_sims)
 	fmt.Printf("\n\n\n%% republicans: %f\n", p_republicans)
+	printElectoralCollegeHistogram(results)
 
 }