Hi there, I have the following problem, I want to get the pair of given sum by using higher order functions. I am able to do this using iterative approach. Can someone help me to solve the problem using higher order function. let array = [1,2,3,4] let givenSum = 5 for i in 0..<array.count {   let j = i + 1   for j in j..<array.count {     if array[i] + array[j] == givenNum {       print("Pair : \(array[i]),\(array[j])")     }   } } The output is [2,3] Any help is appreciated. Thank you

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