How would you approach writing a program that creates a new integer array based on the following condition: Given an input integer array, for each element in the array, calculate the sum of all integers smaller than the current element and populate the new array with these sums? Once i finish the program i was asked to simplify the code with lamba expression.

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Create a new array with sums of all integers smaller than each element in the input array.

Iterate through the input array and for each element, calculate the sum of all integers smaller than the current element.
Populate the new array with these sums.
Use a lambda expression to simplify the code.

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