Remove unnecessary variable assignment #40
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Since Java uses pass by value even if the object is a reference type, so when you set node = null here is gonna effect only in the local scope.
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Ps. Thank you for your course, it really helps me understanding data structure more and also more efficient in recursive function which I lack :) |
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Since Java uses pass by value even if the object is a reference type, so when you set node = null here is gonna effect only in the local scope.