com.google.gerrit.server.submit.CircularPathFinder Maven / Gradle / Ivy
// Copyright (C) 2020 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.gerrit.server.submit;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
class CircularPathFinder {
private CircularPathFinder() {}
/**
* Prints a circular path according to the nodes in {@code p} and the start node {@code target}.
*/
public static String printCircularPath(Collection p, T target) {
StringBuilder sb = new StringBuilder();
sb.append(target);
ArrayList reverseP = new ArrayList<>(p);
Collections.reverse(reverseP);
for (T t : reverseP) {
sb.append("->");
sb.append(t);
if (t.equals(target)) {
break;
}
}
return sb.toString();
}
}