== Why is this an issue?

When a method loops multiple over the same set of data, whether it's a list or a set of numbers, it is highly likely that the method could be made more efficient by combining the loops into a single set of iterations.


=== Noncompliant code example

[source,text]
----
public void doSomethingToAList(List<String> strings) {
  for (String str : strings) {
    doStep1(str);
  }
  for (String str : strings) {  // Noncompliant
    doStep2(str);
  }
}
----


=== Compliant solution

[source,text]
----
public void doSomethingToAList(List<String> strings) {
  for (String str : strings) {
    doStep1(str);
    doStep2(str);
  }
}
----