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20 lines
630 B
Python
20 lines
630 B
Python
#!/usr/bin/python
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''' Set a bit in a binary number:
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1) Shifts 1 over by i bits
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2) make an OR with the number, only the value at bit i will change and all the others bit
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of the mask are zero so will not affect the num
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'''
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def set_bit(num, i):
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mask = 1 << i
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return bin( num | mask )
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if __name__ == '__main__':
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num = int('0100100', 2)
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print set_bit(num, 0) #'0b100101'
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print set_bit(num, 1) #'0b100110'
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print set_bit(num, 2) # nothing change '0b100100'
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print set_bit(num, 3) #'0b101100'
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print set_bit(num, 4) #'0b110100'
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print set_bit(num, 5) # nothing change '0b100100' |