* mapreduce0422 - the name of the current project. */publicclassFlowBeanimplementsWritableComparable<FlowBean>{privatelong upFlow;privatelong downFlow;privatelong sumFlow;publicFlowBean(){}@OverridepublicStringtoString(){returnupFlow+"\t"+downFlow+"\t"+sumFlow;}publicvoidset(long upFlow,long downFlow)...
A stable sort is one where the initial order of equal elements is preserved. Some sorting algorithms are naturally stable, some are unstable. For instance, the merge sort and the bubble sort are stable sorting algorithms. On the other hand, heap sort and quick sort are examples of unstable ...
However, it’s not without its limitations. TheCollections.sort()method sorts in ascending order by default, and it can’t handle null values. If you try to sort a list with null values, it will throw aNullPointerException. Moreover, it may not work as expected with custom objects, unle...
* Returns a permutation describing where output fields come from. In * the returned map, value of {@code map.getTargetOpt(i)} is {@code n} if * field {@code i} projects input field {@code n}, -1 if it is an * expression. */publicstaticMappings.TargetMappingpermutation(List<RexNode...
public void setLat(double lat) { this.lat = lat; } @Override public String toString() { return "Marker [id=" + id + ", lng=" + lng + ", lat=" + lat + "]"; } } 3.编写dao层接口 package org.gzc.dao; import org.gzc.entity.Marker; ...
容器sqlc++java编程算法 C++ STL 之所以得到广泛的赞誉,也被很多人使用,不只是提供了像vector, string, list等方便的容器,更重要的是STL封装了许多复杂的数据结构算法和大量常用数据结构操作。vector封装数组,list封装了链表,map和set封装了二叉树等,在封装这些数据结构的时候,STL按照程序员的使用习惯,以成员函数方式提...
javax.naming.ldap Class SortControl java.lang.Object javax.naming.ldap.BasicControl javax.naming.ldap.SortControl All Implemented Interfaces: Serializable, Control public final class SortControl extends BasicControl Requests that the results of a search operation be sorted by the LDAP server before ...
Methods inherited from class java.lang.Object getClass,notify,notifyAll,wait,wait,wait Constructor Detail TransformSortCriteria public TransformSortCriteria() Method Detail setColumn public void setColumn(Stringcolumn) The column to be used in the sorting criteria that are associated with the machine ...
*/ @Override public void reduce(Record key, Iterator<Record> values, TaskContext context) throws IOException { result.set(0, key.get(0)); while (values.hasNext()) { Record val = values.next(); result.set(1, val.get(0)); context.write(result); } } } /** * The main driver for...
text/java复制 @Override public void sort(Comparator<? super E> c) { Object[] elements = toArray(); Arrays.sort(elements, c); ListIterator<E> iterator = (ListIterator<Object>) listIterator(); for (Object element : elements) { iterator.next(); iterator.set((E) element); } } ...