I am trying to do this in java but I\'m not sure how to go about comparing the p

Question

I am trying to do this in java but I'm not sure how to go about comparing the properties. Any hints on how to start woudl be appreciated.

Deep comparison

The == operator compares objects by identity. But sometimes, you would prefer to compare the values of their actual properties.

Write a function, deepEqual, that takes two values and returns true only if they are the same value or are objects with the same properties whose values are also equal when compared with a recursive call to deepEqual.

To find out whether to compare two things by identity (use the === operator for that) or by looking at their properties, you can use the typeof operator. If it produces "object" for both values, you should do a deep comparison. But you have to take one silly exception into account: by a historical accident, typeof null also produces "object".

Explanation / Answer

var deepEqual = function (x, y) { if ((typeof x == "object" && x != null) && (typeof y == "object" && y != null)) { if (Object.keys(x).length != Object.keys(y).length) return false; for (var prop in x) { if (y.hasOwnProperty(prop)) { if (! deepEqual(x[prop], y[prop])) return false; } else return false; } return true; } else if (x !== y) return false; else return true; }

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