1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
use crate::red_black_tree::RedBlackTree;
use crate::avl_tree::AVLTree;
use std::str::FromStr;
use std::io::{stdin, stdout, Write};
pub struct CommandLineInterface{}
impl CommandLineInterface{
pub fn run(&self){
let mut intro = 1;
loop {
if intro == 1 {
println!("\n\nType \"rbt\" or \"avl\" to select the type of tree to test.");
println!("Type help at any time for a list of available commands.\n");
intro = 0;
}
print!("Select Tree > ");
stdout().flush().unwrap();
let mut input = String::new();
let line = stdin().read_line(&mut input);
match line{
Ok(val) => {
if val < 3{
continue;
}
}
_ => {},
}
let mut parts = input.trim().split_whitespace();
let command = parts.next().unwrap();
match command {
"exit" => return,
"rbt" => {
self.run_rbt();
},
"avl" => {
self.run_avl();
},
"help" => {
println!("\nAvailable commands:\n");
println!(" exit - Exit the program.");
println!(" rbt - Test the red black tree library.");
println!(" avl - Test the avl tree library.");
println!(" help - Show available commands.");
println!();
},
command => {
println!("Command {:?} not recognized. Type help for available commands.", command);
}
}
}
}
fn run_rbt(&self) {
let mut rbtree = RedBlackTree::<f64>::new();
loop {
print!("Testing RBT > ");
stdout().flush().unwrap();
let mut input = String::new();
let line = stdin().read_line(&mut input);
match line{
Ok(val) => {
if val < 3{
continue;
}
}
_ => {},
}
let mut parts = input.trim().split_whitespace();
let command = parts.next().unwrap();
let args = parts;
match command {
"exit" => return,
"help" => {
println!("\nAvailable commands:\n");
println!(" exit - Exit the program. (will delete the current rbt)");
println!(" help - Shows available commands.");
println!(" insert VAL - Inserts \"VAL\" into the tree.");
println!(" delete VAL - Deletes \"VAL\" from the tree.");
println!(" count - Returns the number of leaves in the tree.");
println!(" height - Returns the height of the tree.");
println!(" print - Prints out the node information in order.");
println!(" isempty - Returns 0 if the tree is empty, otherwise 1.");
println!();
},
"insert" => {
match args.peekable().peek() {
Some(val) => {
let float:Result<f64, _> = FromStr::from_str(val);
match float{
Ok(_) => {},
_=> {
println!("Invalid data type. Please try again.");
continue;
},
}
rbtree.insert(FromStr::from_str(val).unwrap());
},
None => {
println!("Must add a value after \"insert\"");
}
}
},
"delete" => {
match args.peekable().peek() {
Some(val) => {
let float:Result<f64, _> = FromStr::from_str(val);
match float{
Ok(_) => {},
_=> {
println!("Invalid data type. Please try again.");
continue;
},
}
rbtree.delete(FromStr::from_str(val).unwrap());
},
None => {
println!("Must add a value after \"delete\"");
}
}
},
"count" => {
println!("{:?}", rbtree.count_leaf_nodes());
},
"height" => {
println!("{:?}", rbtree.get_height());
},
"print" => {
rbtree.print_in_order_traversal();
},
"isempty" => {
println!("{:?}", rbtree.is_empty());
},
command => {
println!("Command {:?} not recognized. Type help for available commands.", command);
}
}
}
}
fn run_avl(&self) {
let mut avltree = AVLTree::<f64>::new();
loop {
print!("Testing AVL > ");
stdout().flush().unwrap();
let mut input = String::new();
let line = stdin().read_line(&mut input);
match line{
Ok(val) => {
if val < 3{
continue;
}
}
_ => {},
}
let mut parts = input.trim().split_whitespace();
let command = parts.next().unwrap();
let args = parts;
match command {
"exit" => return,
"help" => {
println!("\nAvailable commands:\n");
println!(" exit - Exit the program. (will delete the current avl tree)");
println!(" help - Shows available commands.");
println!(" insert VAL - Inserts \"VAL\" into the tree.");
println!(" delete VAL - Deletes \"VAL\" from the tree.");
println!(" count - Returns the number of leaves in the tree.");
println!(" height - Returns the height of the tree.");
println!(" print - Prints out the node information in order.");
println!(" isempty - Returns 0 if the tree is empty, otherwise 1.");
println!();
},
"insert" => {
match args.peekable().peek() {
Some(val) => {
let float:Result<f64, _> = FromStr::from_str(val);
match float{
Ok(_) => {},
_=> {
println!("Invalid data type. Please try again.");
continue;
},
}
avltree.insert(FromStr::from_str(val).unwrap());
},
None => {
println!("Must add a value after \"insert\"");
}
}
},
"delete" => {
match args.peekable().peek() {
Some(val) => {
let float:Result<f64, _> = FromStr::from_str(val);
match float{
Ok(_) => {},
_=> {
println!("Invalid data type. Please try again.");
continue;
},
}
avltree.delete(FromStr::from_str(val).unwrap());
},
None => {
println!("Must add a value after \"delete\"");
}
}
},
"count" => {
println!("{:?}", avltree.count_leaf_nodes());
},
"height" => {
println!("{:?}", avltree.get_height());
},
"print" => {
avltree.print_in_order_traversal();
},
"isempty" => {
println!("{:?}", avltree.is_empty());
},
command => {
println!("Command {:?} not recognized. Type help for available commands.", command);
},
}
}
}
}