Birinchisida

File 25
Haqiqiy raqamlar fayli berilgan.Undagi barcha elementlarni kvadratlari bilan almashtiring .
Код (Python)

1. 
   # -*- coding: utf-8 -*-
   
2. 
   import random
   
3. 
   import string
   
4. 
   import os
   
5. 
   import sys
   
6. 
   
7. 
   def GenerateReals(fname):
   
8. 
   N = random.randint(2,15)
   
9. 
   print("N = ",N)
   
10. 
    L = []
    
11. 
    x = round(random.uniform(0, 10),1)
    
12. 
    L.append(x)
    
13. 
    for i in range(1,N):
    
14. 
    lst_rnd = [round(random.uniform(0, 10),1) for _ in range(0,10)]
    
15. 
    try:
    
16. 
    lst_rnd.remove(x)
    
17. 
    except:
    
18. 
    pass
    
19. 
    x = random.choice(lst_rnd)
    
20. 
    L.append(x)
    
21. 
    print(L)
    
22. 
    try:
    
23. 
    f = open(fname, "w")
    
24. 
    try:
    
25. 
    for x in L:
    
26. 
    line = str(x)+"\n"
    
27. 
    f.write(line)
    
28. 
    finally:
    
29. 
    f.close()
    
30. 
    except IOError:
    
31. 
    print('Write error: ',fname)
    
32. 
    
33. 
    
34. 
    file1 = "file25.txt"
    
35. 
    GenerateReals(file1)
    
36. 
    print("Read from:",file1)
    
37. 
    
38. 
    try:
    
39. 
    #file for temporary data
    
40. 
    N = random.randrange(5,8)
    
41. 
    S = ''.join(random.choice(string.ascii_lowercase + string.ascii_uppercase \
    
42. 
    + string.digits) for _ in range(N))
    
43. 
    temp_file = "temp_" + S + ".txt"
    
44. 
    #print()
    
45. 
    print("Temp file:",temp_file)
    
46. 
    
47. 
    with open(file1, 'r') as f_in, open(temp_file, 'w') as f_out:
    
48. 
    for line in f_in:
    
49. 
    x = float(line.strip())
    
50. 
    y = x * x
    
51. 
    print("%1.1f : %2.2f" % (x, y))
    
52. 
    #print(x,":",y)
    
53. 
    s = str("%2.2f" % y)+'\n'
    
54. 
    f_out.write(s)
    
55. 
    
56. 
    #sys.exit()
    
57. 
    
58. 
    with open(file1, 'w') as f_out, open(temp_file, 'r') as f_in:
    
59. 
    for line in f_in:
    
60. 
    f_out.write(line)
    
61. 
    
62. 
    try:
    
63. 
    os.remove(temp_file)
    
64. 
    except OSError as e:
    
65. 
    print("\nError:", e)
    
66. 
    
67. 
    except IOError:
    
68. 
    print('Open error: ',file1)
    
69. 
    
    

File 26
Haqiqiy raqamlar fayli berilgan.Undagi minimal va maksimal elementlarni almashtiring.
Kod  (Python)
# -*- coding: utf-8 -*-

1. 
   import random
   
2. 
   import string
   
3. 
   import os
   
4. 
   import sys
   
5. 
   
6. 
   def GenerateReals(fname):
   
7. 
   N = random.randint(2,15)
   
8. 
   print("N = ",N)
   
9. 
   L = []
   
10. 
    x = round(random.uniform(0, 10),1)
    
11. 
    L.append(x)
    
12. 
    for i in range(1,N):
    
13. 
    lst_rnd = [round(random.uniform(0, 10),1) for _ in range(0,10)]
    
14. 
    try:
    
15. 
    lst_rnd.remove(x)
    
16. 
    except:
    
17. 
    pass
    
18. 
    x = random.choice(lst_rnd)
    
19. 
    L.append(x)
    
20. 
    print(L)
    
21. 
    try:
    
22. 
    f = open(fname, "w")
    
23. 
    try:
    
24. 
    for x in L:
    
25. 
    line = str(x)+"\n"
    
26. 
    f.write(line)
    
27. 
    finally:
    
28. 
    f.close()
    
29. 
    except IOError:
    
30. 
    print('Write error: ',fname)
    
31. 
    
32. 
    
33. 
    file1 = "file26.txt"
    
34. 
    GenerateReals(file1)
    
35. 
    print("Read from:",file1)
    
36. 
    
37. 
    try:
    
38. 
    #file for temporary data
    
39. 
    N = random.randrange(5,8)
    
40. 
    S = ''.join(random.choice(string.ascii_lowercase + string.ascii_uppercase \
    
41. 
    + string.digits) for _ in range(N))
    
42. 
    temp_file = "temp_" + S + ".txt"
    
43. 
    #print()
    
44. 
    print("Temp file:",temp_file)
    
45. 
    
46. 
    with open(file1, 'r') as f_in, open(temp_file, 'w') as f_out:
    
47. 
    line = f_in.readline()
    
48. 
    x = float(line.strip())
    
49. 
    mx = x
    
50. 
    mn = x
    
51. 
    mx_line = 1
    
52. 
    mn_line = 1
    
53. 
    line_num = 1
    
54. 
    s = str(x)+'\n'
    
55. 
    f_out.write(s)
    
56. 
    for line in f_in:
    
57. 
    line_num += 1
    
58. 
    x = float(line.strip())
    
59. 
    if mx < x:
    
60. 
    mx = x
    
61. 
    mx_line = line_num
    
62. 
    elif mn > x:
    
63. 
    mn = x
    
64. 
    mn_line = line_num
    
65. 
    s = str(x)+'\n'
    
66. 
    f_out.write(s)
    
67. 
    
68. 
    print("Min: %1.1f : %2d" % (mn,mn_line))
    
69. 
    print("Max: %1.1f : %2d" % (mx,mx_line))
    
70. 
    
71. 
    swap1_value = mx
    
72. 
    swap1_line = mn_line
    
73. 
    swap2_value = mn
    
74. 
    swap2_line = mx_line
    
75. 
    
76. 
    print("Swap1: %1.1f : %2d" % (swap1_value,swap1_line))
    
77. 
    print("Swap2: %1.1f : %2d" % (swap2_value,swap2_line))
    
78. 
    
79. 
    #sys.exit()
    
80. 
    
81. 
    with open(file1, 'w') as f_out, open(temp_file, 'r') as f_in:
    
82. 
    line_num = 0
    
83. 
    for line in f_in:
    
84. 
    line_num += 1
    
85. 
    if line_num == swap1_line:
    
86. 
    f_out.write(str(swap1_value)+'\n')
    
87. 
    elif line_num == swap2_line:
    
88. 
    f_out.write(str(swap2_value)+'\n')
    
89. 
    else:
    
90. 
    f_out.write(line)
    
91. 
    print(line,end="")
    
92. 
    
93. 
    try:
    
94. 
    os.remove(temp_file)
    
95. 
    except OSError as e:
    
96. 
    print("\nError:", e)
    
97. 
    
98. 
    except IOError:
    
99. 
    print('Open error: ',file1)
    
100. 
     
     

File 27
A1,A2,…AN elementlari bo’lgan butun sonlar fayli berilgan.(N- fayldagi elementlari soni ).Uning elementlarining asl joylashuvini quyidagi bilan almashtiring : A1, AN, A2, AN−1, A3, ...
Kod  (Python)

1. 
   # -*- coding: utf-8 -*-
   
2. 
   import random
   
3. 
   import string
   
4. 
   import os
   
5. 
   import sys
   
6. 
   import math
   
7. 
   
8. 
   def GenerateInts(fname):
   
9. 
   #generate random real numbers and save them to file
   
10. 
    N = random.randint(2,15)
    
11. 
    N = 9
    
12. 
    #N = 10
    
13. 
    print("N = ",N)
    
14. 
    try:
    
15. 
    f = open(fname, "w")
    
16. 
    try:
    
17. 
    for i in range(0,N):
    
18. 
    #x = random.randint(1,11)
    
19. 
    x = i + 1
    
20. 
    line = str(x)+"\n"
    
21. 
    f.write(line)
    
22. 
    finally:
    
23. 
    f.close()
    
24. 
    except IOError:
    
25. 
    print('Write error: ',fname)
    
26. 
    
27. 
    def CountFile(fname):
    
28. 
    #count number of rows in given text-file
    
29. 
    N = 0
    
30. 
    try:
    
31. 
    with open(fname,'r') as f:
    
32. 
    for line in f:
    
33. 
    N += 1
    
34. 
    #print(N,":",line)
    
35. 
    except IOError:
    
36. 
    print("Open error:",fname)
    
37. 
    return -1
    
38. 
    finally:
    
39. 
    return N
    
40. 
    
41. 
    def GetLineK(fname,K):
    
42. 
    line = ""
    
43. 
    N = 0
    
44. 
    try:
    
45. 
    with open(fname,'r') as f:
    
46. 
    for line in f:
    
47. 
    N += 1
    
48. 
    if K == N:
    
49. 
    break
    
50. 
    except IOError:
    
51. 
    print("Open error:",fname)
    
52. 
    return -1
    
53. 
    finally:
    
54. 
    return line
    
55. 
    
56. 
    file1 = "file27.txt"
    
57. 
    GenerateInts(file1)
    
58. 
    print("Read from:",file1)
    
59. 
    
60. 
    try:
    
61. 
    #file for temporary data
    
62. 
    N = random.randrange(5,8)
    
63. 
    S = ''.join(random.choice(string.ascii_lowercase + string.ascii_uppercase \
    
64. 
    + string.digits) for _ in range(N))
    
65. 
    temp_file_1 = "temp27_" + S + "_1.txt"
    
66. 
    temp_file_2 = "temp27_" + S + "_2.txt"
    
67. 
    #print()
    
68. 
    print("Temp file 1:",temp_file_1)
    
69. 
    print("Temp file 2:",temp_file_2)
    
70. 
    
71. 
    N = CountFile(file1)
    
72. 
    N1 = int(math.ceil(N/2))
    
73. 
    N2 = N - int(N/2)
    
74. 
    
75. 
    try:
    
76. 
    f_in = open(file1, 'r')
    
77. 
    try:
    
78. 
    print("===== Part 1 =====")
    
79. 
    f_out = open(temp_file_1, 'w')
    
80. 
    for i in range(1,N1+1):
    
81. 
    line = f_in.readline()
    
82. 
    print(i,":",line,end="")
    
83. 
    f_out.write(line)
    
84. 
    except IOError:
    
85. 
    print('Read Error: ',temp_file_1)
    
86. 
    finally:
    
87. 
    f_out.close()
    
88. 
    
89. 
    try:
    
90. 
    print("===== Part 2 =====")
    
91. 
    f_out = open(temp_file_2, 'w')
    
92. 
    for i in range(N,N2,-1):
    
93. 
    #print(i)
    
94. 
    line = GetLineK(file1,i)
    
95. 
    print(i,":",line,end="")
    
96. 
    f_out.write(line)
    
97. 
    except IOError:
    
98. 
    print('Read Error: ',temp_file_2)
    
99. 
    finally:
    
100. 
     f_out.close()
     
101. 
     
102. 
     except IOError:
     
103. 
     print('Read Error: ',file1)
     
104. 
     finally:
     
105. 
     f_in.close()
     
106. 
     
107. 
     try:
     
108. 
     f_out = open(file1, 'w')
     
109. 
     try:
     
110. 
     f_in1 = open(temp_file_1, 'r')
     
111. 
     f_in2 = open(temp_file_2, 'r')
     
112. 
     for i in range(0,N2):
     
113. 
     line = f_in1.readline()
     
114. 
     f_out.write(line)
     
115. 
     line = f_in2.readline()
     
116. 
     f_out.write(line)
     
117. 
     finally:
     
118. 
     f_in2.close()
     
119. 
     f_in1.close()
     
120. 
     f_out.close()
     
121. 
     
122. 
     except IOError:
     
123. 
     print('Write Error: ',file1)
     
124. 
     
125. 
     try:
     
126. 
     os.remove(temp_file_1)
     
127. 
     os.remove(temp_file_2)
     
128. 
     except OSError as e:
     
129. 
     print("\nError:", e)
     
130. 
     
131. 
     except IOError:
     
132. 
     print('Open error: ',file1)
     
133. 
     
     

File 28

Haqiqiy sonlar fayli berilgan .Fayldagi har bir elementni ,boshlang’ich va oxirgi elementlardan tashqari ,uning o’rtacha arifmetik qiymatini oldingi va keyingi elementlar bilan almashtiring
Kod (Python)
# -*- coding: utf-8 -*-

1. 
   import random
   
2. 
   
3. 
   def GenerateReals(fname):
   
4. 
   #generate random real numbers and save them to file
   
5. 
   N = random.randint(2,15)
   
6. 
   #N = 9
   
7. 
   print("N = ",N)
   
8. 
   L = []
   
9. 
   x = round(random.uniform(0, 10),1)
   
10. 
    L.append(x)
    
11. 
    for i in range(1,N):
    
12. 
    lst_rnd = [round(random.uniform(0, 10),1) for _ in range(0,10)]
    
13. 
    try:
    
14. 
    lst_rnd.remove(x)
    
15. 
    except:
    
16. 
    pass
    
17. 
    x = random.choice(lst_rnd)
    
18. 
    L.append(x)
    
19. 
    print(L)
    
20. 
    try:
    
21. 
    f = open(fname, "w")
    
22. 
    try:
    
23. 
    for x in L:
    
24. 
    line = str(x)+"\n"
    
25. 
    f.write(line)
    
26. 
    finally:
    
27. 
    f.close()
    
28. 
    except IOError:
    
29. 
    print('Write error: ',fname)
    
30. 
    
31. 
    f_input = "file28_in.txt"
    
32. 
    f_output = "file28_out.txt"
    
33. 
    GenerateReals(f_input)
    
34. 
    print("Read from:",f_input)
    
35. 
    print("Write to:",f_output)
    
36. 
    
37. 
    try:
    
38. 
    with open(f_input, 'r') as f_in, open(f_output, 'w') as f_out:
    
39. 
    line = f_in.readline()
    
40. 
    x1 = float(line.strip())
    
41. 
    f_out.write(line)
    
42. 
    line = f_in.readline()
    
43. 
    x2 = float(line.strip())
    
44. 
    for line in f_in:
    
45. 
    x = float(line.strip())
    
46. 
    x_avg = (x1 + x2 + x) / 3
    
47. 
    s_avg = str(x_avg)+"\n"
    
48. 
    f_out.write(s_avg)
    
49. 
    x1 = x2
    
50. 
    x2 = x
    
51. 
    f_out.write(line)
    
52. 
    
53. 
    except IOError:
    
54. 
    print('Open error: ',file1)
    
55. 
    
    

File 29
50 dan ortiq elementni o'z ichiga olgan butun sonlar fayli berilgan. Fayldan kerakli sonli chekli elementlarni olib tashlash orqali uning hajmini 50 ta elementgacha kamaytiring.
Kod  (Python)

1. 
   # -*- coding: utf-8 -*-
   
2. 
   import random
   
3. 
   
4. 
   def GenerateNumbers(fname):
   
5. 
   N = random.randint(50,65)
   
6. 
   print("N = ",N)
   
7. 
   L = []
   
8. 
   x = random.randrange(1,10)
   
9. 
   L.append(x)
   
10. 
    for i in range(1,N):
    
11. 
    lst_rnd = list(range(1,10))
    
12. 
    lst_rnd.remove(x)
    
13. 
    x = random.choice(lst_rnd)
    
14. 
    L.append(x)
    
15. 
    print(L)
    
16. 
    try:
    
17. 
    f = open(fname, "w")
    
18. 
    try:
    
19. 
    for x in L:
    
20. 
    line = str(x)+"\n"
    
21. 
    f.write(line)
    
22. 
    finally:
    
23. 
    f.close()
    
24. 
    except IOError:
    
25. 
    print('Write error: ',fname)
    
26. 
    
27. 
    f_input = "file29_in.txt"
    
28. 
    f_output = "file29_out.txt"
    
29. 
    GenerateNumbers(f_input)
    
30. 
    print("Read from:",f_input)
    
31. 
    print("Write to:",f_output)
    
32. 
    
33. 
    try:
    
34. 
    with open(f_input, 'r') as f_in, open(f_output, 'w') as f_out:
    
35. 
    for i in range(50):
    
36. 
    line = f_in.readline()
    
37. 
    f_out.write(line)
    
38. 
    
39. 
    except IOError:
    
40. 
    print('Open error: ',file1)
    
41. 
    
    

File 30
Juft sonli elementlardan iborat butun sonlar fayli berilgan.Berilgan fayldan elementlarning ikkinchi yarmini o’chiring.
Kod  (Python)

1. 
   # -*- coding: utf-8 -*-
   
2. 
   import random
   
3. 
   
4. 
   def GenerateNumbers(fname):
   
5. 
   N = random.randint(1,10) * 2
   
6. 
   print("N = ",N)
   
7. 
   L = []
   
8. 
   x = random.randrange(1,10)
   
9. 
   L.append(x)
   
10. 
    for i in range(1,N):
    
11. 
    lst_rnd = list(range(1,10))
    
12. 
    lst_rnd.remove(x)
    
13. 
    x = random.choice(lst_rnd)
    
14. 
    L.append(x)
    
15. 
    print(L)
    
16. 
    try:
    
17. 
    f = open(fname, "w")
    
18. 
    try:
    
19. 
    for x in L:
    
20. 
    line = str(x)+"\n"
    
21. 
    f.write(line)
    
22. 
    finally:
    
23. 
    f.close()
    
24. 
    except IOError:
    
25. 
    print('Write error: ',fname)
    
26. 
    
27. 
    def CountFile(fname):
    
28. 
    #count number of rows in given text-file
    
29. 
    N = 0
    
30. 
    try:
    
31. 
    with open(fname,'r') as f:
    
32. 
    for line in f:
    
33. 
    N += 1
    
34. 
    #print(N,":",line)
    
35. 
    except IOError:
    
36. 
    print("Open error:",fname)
    
37. 
    return -1
    
38. 
    finally:
    
39. 
    return N
    
40. 
    
41. 
    f_input = "file30_in.txt"
    
42. 
    f_output = "file30_out.txt"
    
43. 
    GenerateNumbers(f_input)
    
44. 
    print("Read from:",f_input)
    
45. 
    print("Write to:",f_output)
    
46. 
    
47. 
    N = CountFile(f_input)
    
48. 
    N = int(round(N/2.0))
    
49. 
    
50. 
    try:
    
51. 
    with open(f_input, 'r') as f_in, open(f_output, 'w') as f_out:
    
52. 
    for i in range(N):
    
53. 
    line = f_in.readline()
    
54. 
    f_out.write(line)
    
55. 
    
56. 
    except IOError:
    
57. 
    print('Open error: ',file1)
    
58.