CODEWITHSUNDEEP
swiftdictionary
Raghunath Sahoo
Raghunath Sahoo

Reputation: 31

How to find that there is duplicate data in array of dictionary

I have array of dictionary. If duplicate data is present in the array of dictionary then a flag to be raised with the element name which is duplicate.

The array of dictionary is below:

[[project_code: 1, lob: lob_1], [project_code: 1, lob: lob_1], [project_code: 2, lob: lob_1], [project_code: 3, lob: lob_1]]

Here we need to loop through and find if same project_code and lob is same, then it would return which all project_code which are duplicate.

Duplicate data means the pair of project_code and lob value should be same.

In the above array, if we go through then it should return project_code : 1

If anyone can write a code in Swift ..

Thanks in Advance.

Upvotes: 0

Views: 1858

Answers (2)

Rabindra Nath Nandi
Rabindra Nath Nandi

Reputation: 1461

By using extension:

extension Array {
    var isContainedDuplicateData: Bool {
        for (var i = 0 ; i < self.count; ++i){
            for (var j = i+1 ; j < self.count; ++j){

                let p = self[i] as? NSDictionary
                let q = self[j] as? NSDictionary

                if (p  == q ){
                    return true
                }
            }
        }
        return false
    }
}

var duplicateData: AnyObject {
    for (var i = 0 ; i < self.count; ++i){
        for (var j = i+1 ; j < self.count; ++j){

            let p = self[i] as? NSDictionary
            let q = self[j] as? NSDictionary

            if (p  == q ){
                return p!
            }
        }
    }
    return  NSNull()
}

Then write the following code:

var arr: Array = [["a" : "b"], ["b": "c"],["a": "b"],"s"]
var status = arr.isContainedDuplicateData
var duplicatedata = arr.duplicateData

The result is:

status = false
duplicatedata = ["a": "b"]

Upvotes: 2

Shamsudheen TK
Shamsudheen TK

Reputation: 31311

Here you go,

var dic1 = ["project_code":1, "lob": "lob_1"]
var dic2 = ["project_code":1, "lob": "lob_1"]
var dic3 = ["project_code":2, "lob": "lob_1"]
var dic4 = ["project_code":3, "lob": "lob_1"]

var hasDuplicates = NSArray(objects: dic1,dic2,dic3,dic4)

var duplicates    = NSMutableArray()
var noDuplicates  = NSMutableArray()

for dics in hasDuplicates{

    if noDuplicates.containsObject(dics){

        if !duplicates.containsObject(dics){
            duplicates.addObject(dics)
        }
    }
    else{
        noDuplicates.addObject(dics)
    }
}

println(duplicates)
println(noDuplicates)

//to find the duplicate items key
for dics in duplicates{
    println(dics["project_code"])
}

Upvotes: 1

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