78 lines
2.8 KiB
Python
78 lines
2.8 KiB
Python
import PySimpleGUI as sg
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import os
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sg.ChangeLookAndFeel('BlueMono')
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#get pathname to current file
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dirname, filename = os.path.split(os.path.abspath(__file__))
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pathname = os.path.join(dirname , 'Names.txt')
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#Get data from file
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names = [line.strip() for line in open(pathname)]
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sorted_names = names[:]
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sorted_names.sort()
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tab1_layout =[[sg.Text('Linear Search Demo', font =('Calibri', 14, 'bold'))],
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[sg.Listbox(values =[n for n in names], size = (15, 12),font = ('Calibri', 12), background_color ='White',key = '_display1_')],
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[sg.Text('_'*15,font = ('Calibri', 12))],
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[sg.Text('Enter name to search for:')],
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[sg.InputText(size = (18,1), key = '_linear_')],
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[sg.ReadButton('Linear Search', size = (15,1))]]
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tab2_layout = [[sg.Text('Binary Search Demo', font =('Calibri', 14, 'bold'))],
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[sg.Listbox(values =[n for n in sorted_names], size = (15, 12),font = ('Calibri', 12), background_color ='White',key = '_display2_')],
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[sg.Text('_'*18,font = ('Calibri', 12))],
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[sg.Text('Enter name to search for:')],
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[sg.InputText(size = (18,1), key = '_binary_')],
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[sg.ReadButton('Binary Search', size = (15,1))]]
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layout = [
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[sg.TabGroup([[sg.Tab('Linear Search', tab1_layout),sg.Tab('Binary Search', tab2_layout)]])]]
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window = sg.Window('Main Window').Layout(layout)
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#Linear Search - no need for Ordered list
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def linear_search():
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l = names[:]
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found = False
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for l in l:
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if l == value['_linear_']: #Check each value
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found = True
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result = ['Linear search', l + ' found']
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window.FindElement('_display1_').Update(result)
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break
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if not found:
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result = [value['_linear_'], 'was not found']
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window.FindElement('_display1_').Update(result)
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#Binary Search - only works for ordered lists
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def binary_search():
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l = sorted_names
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lo = 0
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hi = len(l)-1
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found = False
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while lo <= hi:
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mid = (lo + hi) //2
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if l[mid] == value['_binary_']:
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found = True
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result = ['Binary search', l[mid] + ' found.']
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window.FindElement('_display2_').Update(result)
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break
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elif l[mid] < value['_binary_']:
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lo = mid + 1
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else:
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hi = mid - 1
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if not found:
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result = [value['_binary_'], 'was not found']
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window.FindElement('_display2_').Update(result)
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while True:
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button, value = window.Read()
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if button is not None:
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if button == 'Linear Search':
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linear_search()
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if button == 'Binary Search':
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binary_search()
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else:
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break
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