JS-Recursive/scratchpad.js at master · TannerIsBender/JS-Recursive · GitHub

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
function fibFunction(n) {
    var seq;
    var div = document.createElement('div');
    div.setAttribute("class", "x");
    if (n < 2) {
		switch (n) {
			case 0:
				seq = 0;
				break;
			case 1:
				seq = 1;
				break;
		}
        var p = document.createElement('p');
        p.textContent = 'Fibonacci(' + n + ') = ' + seq;
        div.appendChild(p)
    } else {
        var left = fibFunction(n - 1);
        var clas = left.html.getAttribute("class");
        left.html.setAttribute("class", clas + " x-left");
        var right = fibFunction(n - 2);
        clas = right.html.getAttribute("class");
        right.html.setAttribute("class", clas + " x-right");
        seq = left.seq + right.seq;
        var p = document.createElement('p');
        p.textContent = 'Fibonacci(' + n + ') = ' + seq;
        div.appendChild(p);
        div.appendChild(left.html);
        div.appendChild(right.html);
    }
    return { 'seq': seq, 'html': div };
}

function pellFunction(n) {
    var seq;
    var div = document.createElement('div');
    div.setAttribute("class", "x");
    if(n < 2) {
		switch (n) {
			case 0:
				seq = 0;
				break;
			case 1:
				seq = 1;
				break;
		}
        var p = document.createElement('p');
        p.textContent = 'Pell(' + n + ') = ' + seq;
        div.appendChild(p)
    } else {
        var left = pellFunction(n - 1);
        var temp = left.html.getAttribute("class");
        left.html.setAttribute("class", temp + " x-left");
        var right = pellFunction(n - 2);
        temp = right.html.getAttribute("class");
        right.html.setAttribute("class", temp + " x-right");
        seq = (2 * left.seq) + right.seq;
        var p = document.createElement('p');
        p.textContent = 'Pell(' + n + ') = ' + seq;
        div.appendChild(p);
        div.appendChild(left.html);
        div.appendChild(right.html);
    }
    return { 'seq': seq, 'html': div };
}

function tribFunction(n) {
    var seq;
    var div = document.createElement('div');
    div.setAttribute("class", "x");
    if (n < 3) {
		switch (n) {
			case 0:
			case 1:
				seq = 0;
				break;
			case 2:
				seq = 1;
				break;
		}
        var p = document.createElement('p');
        p.textContent = 'Tribonacci(' + n + ') = ' + seq;
        div.appendChild(p)
    } else {
        var left = tribFunction(n - 1);
        var clas = left.html.getAttribute("class");
        left.html.setAttribute("class", clas + " x-left");
        var mid = tribFunction(n - 2);
        clas = mid.html.getAttribute("class");
        mid.html.setAttribute("class", clas + " x-mid");
        var right = tribFunction(n - 3);
        clas = right.html.getAttribute("class");
        right.html.setAttribute("class", clas + " x-right");
        seq = left.seq + mid.seq + right.seq;
        var p = document.createElement('p');
        p.textContent = 'Tribonacci(' + n + ') = ' + seq;
        div.appendChild(p);
        div.appendChild(left.html);
        div.appendChild(mid.html);
        div.appendChild(right.html);
    }
    return { 'seq': seq, 'html': div };
}

var fib = function (n, node) {
    var context = fibFunction(n)
    node.appendChild(context.html);
    node.setAttribute("id", "x");
}
var pell = function (n, node){
    var context = pellFunction(n)
    node.appendChild(context.html);
    node.setAttribute("id", "x");
}
var trib = function (n, node){
    var context = tribFunction(n)
    node.appendChild(context.html);
    node.setAttribute("id", "x");
}

var divCreator = function(color, id) {
    return function() {
        var div = document.createElement('div');
        div.setAttribute('class', color);
        div.setAttribute('id', id);
        document.body.appendChild(div);
    }
}

var firstDiv = divCreator('first', 'fib');
var secondDiv = divCreator('second', 'pell');
var thirdDiv = divCreator('third', 'trib');

firstDiv();
secondDiv();
thirdDiv();

fib(11, document.querySelector('.first'));
pell(11, document.querySelector('.second'));
trib(11, document.querySelector('.third'));

document.title = "Recursive JavaScript";