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37 lines
550 B
Ruby
37 lines
550 B
Ruby
#Swapping two variables
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#Method 1 (using temporary variable)
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def swap(a,b)
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temp = a
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a = b
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b = temp
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return a,b
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end
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#Method 2 (Ruby magic)
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def swap(a,b)
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a,b=b,a
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return a,b
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end
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#Method 3 (Using sum and difference, no temporary variable required)
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#Caveat: Can lead to integer overflow if a and b are really large integers
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def swap(a,b)
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a = a+b
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b = a-b
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a = a-b
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return a,b
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end
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#Method 4 (Using bitwise XOR ,no temporary variable required)
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def swap(a,b)
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a = a^b
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b = a^b
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a = a^b
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return a,b
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end |