Class: GeekHubTasks

Inherits:
Object
  • Object
show all
Defined in:
lib/geekhub_tasks.rb

Class Method Summary collapse

Class Method Details

.a_or_both(a, b) ⇒ Object 



90
91
92
93
94
95
96
97
 
# File 'lib/geekhub_tasks.rb', line 90

def self.a_or_both(a, b)
  if a > b
    p = "First item"
  else
    p = "Both items"
  end
  { :p => p }
end

.age(n) ⇒ Object 



158
159
160
161
162
163
164
165
166
167
168
169
 
# File 'lib/geekhub_tasks.rb', line 158

def self.age(n)
  if n % 10 == 1 && n != 11
    p = " Год "
  elsif n >= 5 && n <= 20
    p = " Лет "
  elsif n % 10 <= 4 && n % 10 > 0
    p = " Годa "
  else
    p = " Лет "
  end
    {:p => p }
end

.area_circle(l) ⇒ Object 



25
26
27
28
 
# File 'lib/geekhub_tasks.rb', line 25

def self.area_circle(l)
  s = ( (l ** 2) / 4 * Math::PI ).round(2)
  { s: s }
end

.arithmetic_progression(a, d, n) ⇒ Object 



38
39
40
41
 
# File 'lib/geekhub_tasks.rb', line 38

def self.arithmetic_progression(a, d, n)
  s = ( 2 * a + ( n - 1 ) * d ) * n/2
  { s: s }
end

.average(a, b) ⇒ Object 



9
10
11
12
13
 
# File 'lib/geekhub_tasks.rb', line 9

def self.average(a, b)
  average_ariphmetic = ( a + b )/2
  average_geometric = Math.sqrt( a * b ).round(1)
  { average_ariphmetic: average_ariphmetic, average_geometric: average_geometric }
end

.average2(a, b) ⇒ Object 



400
401
402
403
404
 
# File 'lib/geekhub_tasks.rb', line 400

def self.average2(a, b)
  average_ariphmetic = ( a.abs + b.abs ) / 2
  average_geometric = Math.sqrt( a.abs * b.abs ).round(1)
  { average_ariphmetic: average_ariphmetic, average_geometric: average_geometric }
end

.check(a, b, r, z) ⇒ Object 



108
109
110
111
112
113
114
115
116
 
# File 'lib/geekhub_tasks.rb', line 108

def self.check(a, b, r, z)
  ab = a % b
  if ab == r || ab == z
    s = "Really,the remainder is set to the given numbers"
  else
    s = "No,the remainder is no set to the given numbers"
  end
  { :s => s }
end

.children(n) ⇒ Object 



395
396
397
398
 
# File 'lib/geekhub_tasks.rb', line 395

def self.children(n)
    z = n.gsub!(/child/, "children")
    { :p => "#{z}" }
end

.chs(k, l) ⇒ Object 



181
182
183
184
185
186
187
188
189
190
 
# File 'lib/geekhub_tasks.rb', line 181

def self.chs(k, l)
  if k != l
    sol =  "k != l"
    #k = ( k + l) && l = ( k + l )
  else
    sol = "k && l = 0"
    #k = 0 && l = 0
  end
    { :sol => sol }
end

.cube(a) ⇒ Object 



261
262
263
264
265
 
# File 'lib/geekhub_tasks.rb', line 261

def self.cube(a)
  v = ( a**3 )
  s = ( 6 * ( a**2 ) )
  { v: v, s:s }
end

.dano(a, b) ⇒ Object 



248
249
250
251
252
253
 
# File 'lib/geekhub_tasks.rb', line 248

def self.dano(a, b)
  c = ( Math.sqrt( ( b**2 ) - ( a ** 2 ) ) ).round(0)
  r = ( ( a + c - b)/2 ).round(0)
  { c: c,
    r: r }
end

.defs(a, b) ⇒ Object 



440
441
442
443
444
445
446
447
448
 
# File 'lib/geekhub_tasks.rb', line 440

def self.defs(a, b)
    x = a.to_i.gcdlcm b.to_i
  if a.to_i == 0 || b.to_i == 0
    p = "Danger!You try division on 0"
  else
    p = "Greatest common divisor"
end
    { :p => p }
end

.distance_between_two_points(x_1, x_2, y_1, y_2) ⇒ Object 



43
44
45
46
47
48
 
# File 'lib/geekhub_tasks.rb', line 43

def self.distance_between_two_points(x_1, x_2, y_1, y_2)
  point_1 = (x_2 - x_1)
  point_2 = (y_2 - y_1)
  s = Math.sqrt(point_1.to_i**2 + point_2.to_i**2).round(2)
  { s: s }
end

.does_it_exist(x, y, z) ⇒ Object 



406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
 
# File 'lib/geekhub_tasks.rb', line 406

def self.does_it_exist(x, y, z)
  if x + y >= z || x + z >= y || y + z >= x
   s1 = "Triangle exist"
  else
   s2 = "This is not triangle"
  end

  if x < y
    k = x;
    m = y;
  else
    k = y;
    m = x;
  end

  if
    m < z
    h = z
  else
    h = m;
    m = z;
  end

  t1 = h * h
  t2 = k * k + m * m

  if t1 < t2
    t1 = "This is an angular triangle"
  else
    t2 = "This isn't an angular triangle"
  end
  { rez1: s1, rez2: t2 }
end

.equality(a, b, c) ⇒ Object 



72
73
74
75
76
77
78
79
 
# File 'lib/geekhub_tasks.rb', line 72

def self.equality(a, b, c)
  if a < b && b < c
    p = "Equality is fulfilled"
  else
    p = "We have trouble with equality"
  end
    { :p => p }
end

.even_number(n) ⇒ Object 



99
100
101
102
103
104
105
106
 
# File 'lib/geekhub_tasks.rb', line 99

def self.even_number(n)
  if n % 2 == 0
    p = "Number is even"
  else
    p = "Sorry,number isn't even"
  end
    { :p => p}
end

.fact(m, n) ⇒ Object 



339
340
341
342
343
344
 
# File 'lib/geekhub_tasks.rb', line 339

def self.fact(m, n)
  n_1 = Math.gamma(n+1)
  m_1 = Math.gamma(m+1)
  m_n = Math.gamma( ( m + n ) + 1 )
  { result: ( n_1 + m_1 )/m_n }
end

.factor(n) ⇒ Object 



176
177
178
179
 
# File 'lib/geekhub_tasks.rb', line 176

def self.factor(n)
  x = Math.gamma(n+1)
  { f: x }
end

.fou_one(a, b, c) ⇒ Object 



215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
 
# File 'lib/geekhub_tasks.rb', line 215

def self.fou_one(a, b, c)
  if a >= 1 && a <= 3
    a = "belong to the gap"
  else
    a = "do not belong to the gap"
  end

  if b >= 1 && b <= 3
    b = "belong to the gap"
  else
    b = "do not belong to the gap"
  end

  if c >= 1 && c <= 3
    c = "belong to the gap"
  else
    c = "do not belong to the gap"
  end
  { a: a, b:b, c:c}
end

.fourty(a, b) ⇒ Object 



148
149
150
151
152
153
154
155
156
 
# File 'lib/geekhub_tasks.rb', line 148

def self.fourty(a, b)
  if a <= b
    p = ("a = 0")
    a = 0
  else
    p = "a > b"
  end
  { :p => p }
end

.gsub(n) ⇒ Object 



285
286
287
288
289
290
291
292
293
294
 
# File 'lib/geekhub_tasks.rb', line 285

def self.gsub(n)
    n.downcase!
  if n.to_s.gsub!(/!/, ".")
    s = "Your redacted string is #{n}"
  else
    puts "Nothing to do here!"
  end
    puts "Your string is: #{n}"
    { :s => s }
end

.gsub_include(n) ⇒ Object 



312
313
314
315
316
317
318
319
 
# File 'lib/geekhub_tasks.rb', line 312

def self.gsub_include(n)
  if n.to_s.include? "*"
     x = n.gsub(/!/, "-")
  end
  puts "Text before redacted: #{n}"
    z = "Text after redacted: #{x}"
    { :z => z }
end

.half_or_double(x, y) ⇒ Object 



236
237
238
239
240
241
242
243
244
245
246
 
# File 'lib/geekhub_tasks.rb', line 236

def self.half_or_double(x, y)
  if x < y
    x = ( x + y ) / 2
    y = ( x + y ) * 2
  else
    y = ( x + y ) / 2
    x = ( x + y ) * 2
  end
    { sol1: x,
      sol2: y }
end

.include_scan(n) ⇒ Object 



303
304
305
306
307
308
309
310
 
# File 'lib/geekhub_tasks.rb', line 303

def self.include_scan(n)
  if n.include? "eeeee"
    s = "Yes, string include 'eeeee' "
  else
    s = "No, string includen't 'eeeee' "
  end
    { :s => s }
end

.math1(x, y) ⇒ Object 



203
204
205
206
207
208
 
# File 'lib/geekhub_tasks.rb', line 203

def self.math1(x, y)
  sum  = x + y
  diff = x - y
  comp = x * y
  { sum: sum, diff: diff, comp: comp}
end

.mix(v_1, t_1, v_2, t_2) ⇒ Object 



50
51
52
53
54
55
 
# File 'lib/geekhub_tasks.rb', line 50

def self.mix(v_1, t_1, v_2, t_2)
  z = v_1 + v_2
  t = ( ( v_1 * t_1 ) + ( v_2 * t_2 ) )/z.to_i
  { v: z,
  t: t }
end

.mosn(x, y) ⇒ Object 



359
360
361
362
363
364
 
# File 'lib/geekhub_tasks.rb', line 359

def self.mosn(x, y)
  max = [x, y].max
  min = [x, y].min
  minmax = [x, y].minmax
  {max: max, min: min, minmax: minmax}
end

.new(v1, v2, a1, a2, s) ⇒ Object 



381
382
383
384
 
# File 'lib/geekhub_tasks.rb', line 381

def self.new(v1, v2, a1, a2, s)
  result = ( (-(v1+v2)+Math.sqrt( ( (v1+v2) ** 2 )+ 2 * ( a1 + a2 ) * s ) )/( a1 + a2 ) ).round(0)
  { result: result }
end

.number_of_hundreds(n) ⇒ Object 



118
119
120
121
122
123
124
125
126
 
# File 'lib/geekhub_tasks.rb', line 118

def self.number_of_hundreds(n)
  num = n / 100
  if n > 99
    s = 1
  else
    s = 2
  end
    {s: s}
end

.period(l) ⇒ Object 



20
21
22
23
 
# File 'lib/geekhub_tasks.rb', line 20

def self.period(l)
  t = ( 2 * Math::PI * (l / 9.8 ) ).round(2)
  { t: t }
end

.positive_power_two(a, b, c) ⇒ Object 



346
347
348
349
350
351
352
353
354
355
356
357
 
# File 'lib/geekhub_tasks.rb', line 346

def self.positive_power_two(a, b, c)
  if a > 0
    a = a ** 2
  end
  if b > 0
    b = b ** 2
  end
  if c > 0
    c = c ** 2
  end
    { c: c }
end

.power(n) ⇒ Object 



171
172
173
174
 
# File 'lib/geekhub_tasks.rb', line 171

def self.power(n)
  x = n**2
  { x: x }
end

.powers(m1, m2, r) ⇒ Object 



210
211
212
213
 
# File 'lib/geekhub_tasks.rb', line 210

def self.powers(m1, m2, r)
  x = (m1 * m2)/(r**2)
  { sol: x }
end

.put(a) ⇒ Object 



333
334
335
336
337
 
# File 'lib/geekhub_tasks.rb', line 333

def self.put(a)
  arr = []
  x =  ( 1..a ).select{ |x| arr << x if a % x == 0 }
  { res: arr}
end

.quadratic_equation(a, b, c) ⇒ Object 



267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
 
# File 'lib/geekhub_tasks.rb', line 267

def self.quadratic_equation(a, b, c)
  d = b * b - 4 * a * c

  if (d == 0)
    x1 = ( -b/2/a ) && x2 = ( -b/2/a )
  else
  end

  if (d > 0)
    x1 = ( (-b-Math.sqrt(d))/2/a).round(2)
    x2 = ( (-b+Math.sqrt(d))/2/a).round(2)
  else
    x1 = (-b/2/a) +(Math.sqrt(-d)/2/a).round(2)
    x2 = (-b/2/a) +(-Math.sqrt(-d)/2/a).round(2)
  end
    { x1: x1, x2: x2 }
end

.rad(r1, r2) ⇒ Object 



372
373
374
375
376
377
378
379
 
# File 'lib/geekhub_tasks.rb', line 372

def self.rad(r1, r2)
  if r1 < r2
    r = ( Math::PI * ( r1 ** 2) - ( r2 ** 2) ).round(2)
  else
    r = "das"
end
    { r: r }
end

.real(a, b, c, d) ⇒ Object 



321
322
323
324
325
326
327
328
329
330
331
 
# File 'lib/geekhub_tasks.rb', line 321

def self.real(a, b, c, d)
  z = [a ** 2, b ** 2, c ** 2, d ** 2 ]
  if a <= b && b <= c && c <= d
    norm = "Highest number "
  elsif a > b && b > c && c > d
    norm = "Digital in normal"
  else
    norm = "Squares of numbers #{z}"
  end
  { :norm => norm }
end

.sides_triangle(a_1, b_1, r) ⇒ Object 



30
31
32
33
34
35
36
 
# File 'lib/geekhub_tasks.rb', line 30

def self.sides_triangle(a_1, b_1, r)
  c_1 = ( 180 - ( a_1 + b_1 ) )
  a = 2 * r * Math.sin(a_1 * ( Math::PI/180 ) ).round(2)
  b = 2 * r * Math.sin(b_1 * ( Math::PI/180 ) ).round(2)
  c = 2 * r * Math.sin(c_1.to_i * ( Math::PI/180 ) ).round(2)
  { a: a, b: b, c:c }
end

.sixty_eight_a(n) ⇒ Object 



139
140
141
142
143
144
145
146
 
# File 'lib/geekhub_tasks.rb', line 139

def self.sixty_eight_a(n)
  if n.to_s.reverse == n.to_s
    p = "This number is palindrome"
  else
    p = "This number is'nt palindrome"
  end
  { :p => p }
end

.sixty_five(n) ⇒ Object 



192
193
194
195
196
197
198
199
200
201
 
# File 'lib/geekhub_tasks.rb', line 192

def self.sixty_five(n)
    a = n/10
    b = n - a.to_i * 10
  if a**2 == ( a + b )**3
    z = "Yes, n**2 = n(digital**3)"
  else
    z = "No, n**2 != n(digital**3)"
  end
  { :z => z }
end

.sixty_seven(n) ⇒ Object 



128
129
130
131
132
133
134
135
136
137
 
# File 'lib/geekhub_tasks.rb', line 128

def self.sixty_seven(n)
  x = n.to_s.length # number of digits in number
  z = n.to_s.chars.map { |sum,n| sum = sum.to_i + n.to_i}  # display sum
  x = n.to_s.split('')
  y = x.to_a
  f = "Display the first digit " + y[0].to_s # display first digit
  s = "Display the last digit " + y[-1].to_s # display the last digit
  t = "Display the penultimate digit " + y[-2].to_s  # dispaly penultimate digit
  { :f => f, :s => s, :t => t}
end

.string(n) ⇒ Object 



296
297
298
299
300
301
 
# File 'lib/geekhub_tasks.rb', line 296

def self.string(n)
  puts "Your string before readected: " + "#{n}"
  n.delete! "*"
  str1 = "Your string after readected: #{n}"
  { :str1 => str1 }
end

.temp(b) ⇒ Object 



366
367
368
369
370
 
# File 'lib/geekhub_tasks.rb', line 366

def self.temp(b)

   to_f = ( ( 0..b ).each { |t| return ( t * 1.8 + 32 ).round(2) } )
   { to_f: to_f }
end

.test(n) ⇒ Object 



386
387
388
389
390
391
392
393
 
# File 'lib/geekhub_tasks.rb', line 386

def self.test(n)
  if n.to_s.include?("3")
    p = "Yes,include"
  else
    p = "No"
  end
  { :p => p}
end

.time(h) ⇒ Object 



15
16
17
18
 
# File 'lib/geekhub_tasks.rb', line 15

def self.time(h)
  t = Math.sqrt( 2 * ( h/9.8) )
  { t: t }
end

.trapezium(a, b, c) ⇒ Object 



62
63
64
65
66
67
68
69
70
 
# File 'lib/geekhub_tasks.rb', line 62

def self.trapezium(a, b, c)
  if a < b
    puts "Mistake..b can't be greater than a"
  end
    x = ( ( ( a - b )/2 ) * Math.tan(c) ).round(2)
    s = ( ( a + b ) * x.to_i)/2
  { h: x,
    s: s }
end

.triangle(a, b) ⇒ Object 



3
4
5
6
7
 
# File 'lib/geekhub_tasks.rb', line 3

def self.triangle(a, b)
  hypotenuse = Math.sqrt( ( a**2 ) + ( b**2 ) ).round(2)
  area = ( a * b )/2
  { hypotenuse: hypotenuse, area: area }
end

.triangle_area(a) ⇒ Object 



57
58
59
60
 
# File 'lib/geekhub_tasks.rb', line 57

def self.triangle_area(a)
  s = ( a**2 ) * (Math.sqrt(3)/4).round(2)
  { s: s }
end

.two_tasks(x) ⇒ Object 



255
256
257
258
259
 
# File 'lib/geekhub_tasks.rb', line 255

def self.two_tasks(x)
  result_1 = ( 1 - 2 * x + ( 3 * (x**2 ) ) - ( 4 * ( x**3 ) ) )
  result_2 = ( 1 + 2 * x + ( 3 * (x**2 ) ) + ( 4 * ( x**3 ) ) )
  { result_1: result_1, result_2: result_2 }
end

.x_or_y(x, y) ⇒ Object 



81
82
83
84
85
86
87
88
 
# File 'lib/geekhub_tasks.rb', line 81

def self.x_or_y(x, y)
  if x > y
    z = x - y
  else
    z = y - x + 1
  end
    { z: z }
end