79 lines
3.0 KiB
Python
79 lines
3.0 KiB
Python
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#PySimple examples (v 3.8)
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#Tony Crewe
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#Sep 2018
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import PySimpleGUI as sg
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sg.SetOptions (font =('Calibri',12,'bold'))
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layout =[[sg.Text('Search Demo', font =('Calibri', 18, 'bold')), sg.ReadButton('Show Names')],
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[sg.Text('',size = (14, 11),relief=sg.RELIEF_SOLID,font = ('Calibri', 12), background_color ='White',key = 'display1'),
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sg.Text('',size = (14, 11),relief=sg.RELIEF_SOLID,font = ('Calibri', 12), background_color ='White',key = 'display2')],
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[sg.Text('_'*32,font = ('Calibri', 12))],
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[sg.InputText(size = (14,1), key = 'linear'), sg.InputText(size = (14,1), key = 'binary')],
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[sg.ReadButton('Linear Search', size = (13,1)), sg.ReadButton('Binary Search', size = (14,1))],
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]
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window = sg.Window('Search Demo').Layout(layout)
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#names for Demo, could be loaded from a file
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Names = ['Roberta', 'Kylie', 'Jenny', 'Helen',
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'Andrea', 'Meredith','Deborah','Pauline',
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'Belinda', 'Wendy']
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SortedNames = ['Andrea','Belinda','Deborah','Helen',
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'Jenny','Kylie','Meredith','Pauline',
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'Roberta','Wendy']
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#function to display list
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def displayList(List, display):
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names = ''
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for l in List: #add list elements with new line
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names = names + l + '\n'
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window.FindElement(display).Update(names)
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#Linear Search - no need for Ordered list
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def linearSearch():
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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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window.FindElement('display1').Update('Linear search\n' + l + ' found.')
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break
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if not found:
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window.FindElement('display1').Update(value['linear'] + ' was \nNot found')
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#Binary Search - only works for ordered lists
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def binarySearch():
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L = SortedNames[:]
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lo = 0
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hi = len(L)-1
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found = False #Start with found is Flase
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while lo <= hi:
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mid = (lo + hi) //2 #Start in middle
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if L[mid] == value['binary']: #get the value from the search box
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window.FindElement('display2').Update('Binary search\n' + L[mid] + ' found.')
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found = True #If found display
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break #and stop
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elif L[mid] < value['binary']:
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lo = mid + 1 #Search in top half
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else:
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hi = mid - 1 #Search in lower half
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if not found: #If we get to end - display not found
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window.FindElement('display2').Update(value['binary'] + ' was \nNot found')
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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 == 'Show Names': #show names - unordered and sorted
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displayList(Names,'display1')
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displayList(SortedNames, 'display2')
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if button == 'Linear Search': #Find and display
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linearSearch()
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if button == 'Binary Search': #Find and display
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binarySearch()
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else:
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break
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