Подскажите пожалуйста, что означает этот момент кода на Java

* Solves everything and returns right answer

* @param exprList

* @param input

* @return

*/

public static Double[] getAnswer (List exprList, Integer input) {

Integer iteration = new Integer(3);

Double[] answer = new Double[exprList.size() * iteration];

String currentFunc = new String();

Double funcInput, funcOutput = new Double(0);

for (int i = 0; i < iteration; i++) {

currentFunc = exprList.get(0);

funcInput = input.doubleValue();

funcOutput = solveFunc(currentFunc, funcInput);

answer[0 + 5 * i] = funcOutput;

if (i > 0) {

funcInput = answer[1 + 5*(i - 1)] + funcOutput;

} else {

funcInput = funcOutput;

}

currentFunc = exprList.get(2);

answer[2 + 5*i] = solveFunc(currentFunc, funcInput);

currentFunc = exprList.get(3);

answer[3 + 5*i] = solveFunc(currentFunc, funcInput);

currentFunc = exprList.get(1);

funcInput = answer[2 + 5*i] + answer[3 + 5*i];

answer[1 + 5*i] = solveFunc(currentFunc, funcInput);

currentFunc = exprList.get(4);

answer[4 + 5*i] = solveFunc(currentFunc, funcInput);

}

return answer;

}