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45 lines
858 B
Markdown
45 lines
858 B
Markdown
---
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layout: post
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title: "Reverse Bit [CF]"
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date: 2016-05-22 04:04:23 +0700
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categories: [python, codefights]
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---
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Author Question: **Giappi**
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I have an integer number, which I want to reverse by following steps:
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1. Convert the number into binary string.
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2. Reverse binary string.
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3. Convert the reversed binary string back to integer.
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Can you help me write a function to do it ?
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**Example**
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For `x = 234`, the output should be `ReverseBit(x) = 87`.
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`23410 = 111010102 => 010101112 = 8710`.
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**Input/Output**
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* **[input] integer x**
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A non-negative integer.
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* **[output] integer**
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x reversed as described above.
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**Solution:**
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```python
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def ReverseBit(x):
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x = bin(x).replace('0b', '')
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reverse_text = ''
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for l in range(len(x)-1, -1, -1):
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reverse_text = reverse_text + x[l]
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return int(reverse_text, 2)
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>>> ReverseBit(234)
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87
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>>>
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``` |