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public boolean is empty return n 0
determine if binary heap is empty
public boolean sort comparable e ar int left int right if right left return false form a heap this could be done in place but this is simpler coding binary heap e heap new binary heap e right left 1 int i left while i right heap insert i ar i i i left while heap is empty ar i heap smallest return true
sort using heapsort method
public boolean sort e ar int left int right comparator e comparator if right left return false form a heap this could be done in place but this is simpler coding external binary heap e heap new external binary heap e right left 1 comparator object sorted new object right left 1 int i left while i right heap insert ar i i i left while heap is empty sorted i heap smallest copy back in system arraycopy sorted 0 ar left sorted length return true
sort using heapsort method with external comparator
public void add count count
increase number of trials with this time
public string to string return time t count
reasonable to string method
public int compare to hist pair hp if time hp time return 0 if time hp time return 1 return 1
compare by time only
public v minimum balanced binary node k v p root if p null return null while p left null p p left v old value p value delete entry p return old value
removes and returns minimum value in tree
public string draw igraph entity n return style filled fillcolor gray50 label n node label
half grayscale colored nodes
public string draw igraph entity n string special font if n instanceof iselect font string font name iselect font n font name if font name null special font fontname iselect font n font name int sz iselect font n font size if sz 0 special font fontsize sz return special font label n node label
default node is drawn simply using its node label
public string to string return dimension point
reasonable to string method
public legend string s legend s
construct the legend contents from a string
public string draw igraph entity n return fillcolor 8 8 8 label n node label
discarded nodes are drawn in grayscale
public string node label return legend
return label from the legend
public binary heap int n n 0 initially none in the heap simplify algorithm to consider position 1 as being the root elements new object n 1 for int k 0 k n 1 k elements k new element h pos new int n 1
construct binary heap of the given size
public int smallest id element h el smallest return el id
return the integer identifier of the smallest entry
public void decrease key int id comparable e reduced priority int size n truncate heap temporarily and act like the binary heap up to but not including this one is all that exists cute huh n pos id 1 now we insert and the binary heap is shuffled appropriately insert id reduced priority since the new priority must be lower we can expand back and we still have a working binary heap n size
decrease the priority of the known element in the binary heap with the
public simple string char chars this chars new char chars length for int i 0 i chars length i this chars i chars i
store copy of character array
public simple string string s this chars s to char array
produce char array from existing java
public string to string return new string chars
reasonable to string method
public void ordering string ord ordering ord
ordering of children
public void rank string r optional rank rankdir r
rank orientation of the figure
public string node type return record
default to having nodes with complex record shapes
public string edge type return dir none
edges should be undirected
private void add node string builder graph igraph entity node graph append get key node label node node label
helper methods for depicting the contents of the node
public element string name string symbol int number float mass this name symbol number mass true
constructor for a stable element
public element string name string symbol int number float mass boolean stable this name name this symbol symbol this mass mass this number number this stable stable
constructor for a chemical element
public board int n board new boolean n n this n n
construct the n by n board
private boolean valid int row int col another queen in same column left diagonal or right diagonal int d 0 while d row if board row d col return false if col d board row d col d return false if col d n board row d col d return false return true ok
start with row and work upwards to see if still valid
public boolean random next board int r int sz next valid row positions size if sz 0 return false int c int math random sz board r next valid row positions get c true return true
if no board is available then return false
protected string get key igraph entity value for iterator string it nodes key set iterator it has next string key it next igraph entity target nodes get key if target value return key return null
helper function to reverse locate the key
public boolean is unstable return stable
determine if this chemical element is unstable
public string to string if stable return symbol mass int isotope mass int mass return symbol isotope mass
return string representation of element
public boolean equals object o if o null return false if o instanceof element element other element o return other symbol equals symbol other name equals name other number number other mass mass other stable stable nope return false
determine equality based solely on the atomic symbol
public void mark start igraph entity st start get key st
mark the start node
public void mark goal igraph entity gl goal get key gl
mark the goal node found
public void accept ibalanced visitor k v visitor if root null return accept null root visitor
accept a visitor for a inorder traversal
public void visit edge igraph entity n1 igraph entity n2 string k1 get key n1 string k2 get key n2 edges append new edge pair k1 k2
if called multiple times multiple edges result
public void visit edge igraph entity n1 igraph entity n2 string label string k1 get key n1 string k2 get key n2 edge pair ep new edge pair k1 k2 ep label label edges append ep
assign label to the edge upon creation
public void test zero length line sweep dba new line sweep showed a problem iline segment segments new iline segment new two dline segment 0 0 5 5 new two dline segment 2 2 2 2 hashtable ipoint list iline segment res dba intersections segments for ipoint ip res key set list iline segment ilss res get ip system out println ip for iline segment ils ilss system out println ils system out println assert equals 1 res size
zero length segments note that the intersection point will
private string to string balanced binary node k v node if node null return string builder sb new string builder sb append to string node left sb append node to string sb append to string node right return sb append to string
return string of sub tree rooted at node
public void test collinear line sweep dba new line sweep showed a problem iline segment segments new iline segment new two dline segment 0 0 5 5 new two dline segment 2 2 10 10 hashtable ipoint list iline segment res dba intersections segments for ipoint ip res key set list iline segment ilss res get ip system out println ip for iline segment ils ilss system out println ils system out println assert equals 2 res size
collinear points shouldnt cause problems
public void mark edge igraph entity n1 igraph entity n2 string k1 get key n1 string k2 get key n2 node edge pair n edges head while n null edge pair ep n value if ep start key equals k1 ep end key equals k2 ep mark break n n next
mark special edges in bold
public int dimensionality return 3
hyperpoint inner new hyperpoint 4 7 5 different
public string to string if root null return return to string root
return parenthetical string of tree structure using in order traversal
public string to string return super to string low value high value
reasonable extension to to string method
public void set up edges out new edge info 2 edges in new edge info 2 edges new array list edge info edges add edges out 0 new edge info 0 1 3 edges add edges out 1 new edge info 0 2 2 edges add new edge info 1 4 2 edges add new edge info 2 3 2 edges add new edge info 2 4 3 edges add new edge info 1 3 2 edges add edges in 0 new edge info 3 5 3 edges add edges in 1 new edge info 4 5 2
example intended to show why traversing backedges to reduce flows works
public void set up edges out new edge info 2 edges in new edge info 2 edges new array list edge info edges add edges out 0 new edge info 0 1 3 edges add edges out 1 new edge info 0 2 2 edges add new edge info 1 3 2 edges add new edge info 1 4 2 edges add new edge info 2 3 2 edges add new edge info 2 4 3 edges add edges out 0 new edge info 3 5 3 edges add edges out 1 new edge info 4 5 2
figure 8 fact sheet
public plus move
increment move selects the position to be incremented
public boolean is valid inode state one puzzle op one puzzle state return op s one puzzle max value
moves are valid as long as state max value
public one puzzle s 0
initialize to empty
public one puzzle int x s x
initialize to pre existing board state
public string pack iterator integer it string builder sb new string builder while it has next sb append it next remove trailing comma if possible if sb length 0 sb delete char at sb length 1 return sb to string
extract all values from the iterator and pack into a comma separated string
public inode copy return new one puzzle s
return copy of node
public void score int score this score score
set score for this node
public int compare to one puzzle op return s op s
needed for nodes to be placed within binary tree
public void test hitchcock int sup new int 4 5 3 9 int dem new int 3 3 6 2 1 2 int d new int 5 3 7 3 8 5 5 6 12 5 7 11 2 8 3 4 8 2 9 6 10 5 10 9 transportation tr new transportation sup dem d ford fulkerson ff new ford fulkerson tr new shortest path array tr ff compute assert equals 17 tr get flow assert equals 93 tr get cost
show how to use max flow to solve hitchchock transportation problem
protected void init application context throws beans exception if is cache get transformer factory
pre initialize the factory from the xml file
public saxtransformer factory get sax transformer handler synchronized tr xo class if stf null stf saxtransformer factory transformer factory new instance stf set uriresolver this return stf
creates a new identity transformer
public void set async boolean value this async value
sets the value of the async property
public void comment string text throws saxexception if text null char chars text to char array get lexical handler comment chars 0 chars length
generates sax events for the given text
protected string get page name string lookup path this url path helper get lookup path for request get request if log is debug enabled log debug looking up handler for lookup path return lookup path
look up a handler for the url path of the given request
public boolean has next return param name matcher find
returns true if the call to next will return a token rather
override protected void startup show new map view this
at startup create and show the main frame of the application
private folder get folder element emp el string name get text value emp el name string selected get text value emp el selected if integer parse int selected 0 return new folder name false else return new folder name true
i take an employee element and read the values in create
private folder get folder element emp el string name get text value emp el name folder l new folder name return l
i take an employee element and read the values in create
private link get link element emp el string imdb emp el get attribute imdb string naam get text value emp el name string year get text value emp el year string score get text value emp el score link l new link imdb naam year score return l
i take an employee element and read the values in create
public void started server state state set string roles log warn started the server has started publishing state and roles to the cluster if roles null set roles roles null either the roles were not provided or the roles have not changed publish the existing roles to the cluster anyway publish roles roles ref get attempt to set the new state if provided if state null set state state null either the state was not provided or the state has not changed publish the existing state to the cluster anyway publish state state ref get
this method should be called after the server has fully initialized so
public server endpoint get server endpoint string group name return jboss server get instance get server endpoint group name
the server end point for the given group
public server state view set state server state state throws illegal argument exception for server state view previous state view state ref get if previous state view get state state return null server state view new state view inner compare and set state previous state view state if new state view null return new state view
sets the state of the server
public void request server state broadcast string group name if invalidation manager null publish invalidation notification invalidation manager batch invalidate create server state broadcast request group name true
requests a broadcast of the state of all servers in the cluster
public void request node roles broadcast string group name if invalidation manager null publish invalidation notification invalidation manager batch invalidate create roles broadcast request group name true
requests a broadcast of the node roles of all servers in the cluster
public server node config get long id throws server node config exception server node config dao server config dao persistence manager get id return new server node config impl server config dao get id server config dao get node id server config dao get description server config dao get host server config dao get port get node role ids server config dao
retrieves the server node config for the given id primary key
public void publish state string group name publish state group name state ref get
publishes the state of this server to all listeners of the given group
public void publish roles string group name publish roles group name roles ref get
publishes the roles of this server to all listeners of the given group
public server state get state return get state view get state
gets the transient state of the server
public server state view get state view return state ref get
returns the server state view which also includes the view id
private void generate node resolver element parent extendable string node resolver id if node resolver id null node resolver id get inheritance inheritance inherited create text element parent node resolver element node resolver id to string
generate the node resolver element
public server info get server info todo should get rid of this method iterator string it get all server endpoints key set iterator if it has next return get server info it next throw new runtime exception no server endpoints registered
returns information about the server
private void generate default load balance policy element parent extendable string default load balance policy definition id if default load balance policy definition id null default load balance policy definition id get inheritance inheritance inherited create text element parent default load balance policy element default load balance policy definition id to string
generate the default load balance policy element
private void generate load balance policies element parent collection factory definition load balance policy load balance policy definitions for factory definition load balance policy factory def load balance policy definitions if factory def get inheritance inheritance inherited generate load balance policy parent factory def
generate the load balance policy elements
public object register listener string group name invalidatable listener org jboss cache invalidation invalidatable jboss listener new jboss invalidatable wrapper listener get invalidation group group name register jboss listener return jboss listener
registers a listener that will be notified when a servers state changes
public void unregister listener string group name object listener key if listener key instanceof org jboss cache invalidation invalidatable get invalidation group group name unregister org jboss cache invalidation invalidatable listener key else throw new illegal argument exception invalid listener key
unregister the listener that was registered using the call
private element generate meta data element parent map string extendable string meta data element meta data element create element parent metadata element for map entry string extendable string entry meta data entry set string name entry get key extendable string extendable value entry get value if extendable value get inheritance inheritance inherited continue generate meta meta data element name extendable value to string return meta data element
generates a meta data element for the given meta data map
private element generate meta element parent string name string value element attribute element create text element parent meta element value attribute element set attribute name attribute name return attribute element
generates a meta element for the given name value pair
public throttle get request throttle throttle request throttle throttle get if request throttle null throw new illegal state exception request throttle is not set return request throttle
returns the request throttle object
private element generate attributes element parent map string collection string attributes element attributes element create element parent attributes element for map entry string collection string entry attributes entry set generate attributes attributes element entry get key entry get value return attributes element
generates an attributes element for the given attribute map
public void set request throttle throttle request throttle if throttle compare and set null request throttle throw new illegal state exception request throttle is already set
sets registers the request throttle object
private void mark as unavailable long off line until system current time millis offline period if offline start time compare and set 0 off line until if log is debug enabled log debug mark as unavailable id owner id the node has been marked as unavailable until new date off line until else if log is debug enabled log debug mark as unavailable id owner id the node is has already been marked as unavailable by another thread
marks the node as unavailable for a period of offline period milliseconds
private void generate attributes element parent string name collection string values for string value values generate attribute parent name value
generates attribute elements for the given name and collection of values
public boolean is request throttle set return throttle get null
indicates whether the request throttle object was set
private element generate attribute element parent string name string value element attribute element create text element parent attribute element value attribute element set attribute name attribute name return attribute element
generates an attribute element for the given name value pair
public boolean is request throttle enabled return request throttle enabled get
returns true if request throttling is enabled
private void generate property matchers element parent collection factory definition property matcher property matcher definitions for factory definition property matcher factory def property matcher definitions if factory def get inheritance inheritance inherited generate property matcher parent factory def
generates property matcher elements for the given collection of property matcher factory definitions
public boolean enable request throttle boolean enable if enable is request throttle set throw new illegal state exception request throttle cannot be enabled since it has not been set for boolean currently enabled request throttle enabled get if enable currently enabled return false if request throttle enabled compare and set currently enabled enable return true
enables disables request throttling
private element generate property matcher element parent factory definition property matcher factory def element property matcher element create element parent property matcher element property matcher element set attribute name attribute factory def get id generate def property matcher element factory def create text element property matcher element class name element factory def get factory class generate attributes property matcher element factory def get attributes return property matcher element
generate a property matche element for the given property matcher factory definition
private void generate default property matcher element parent extendable string default property matcher id if default property matcher id null default property matcher id get inheritance inheritance inherited create text element parent default property matcher element default property matcher id to string
generates the default property matcher element
public boolean has exceeded deviation threshold string node id list node nodes return get deviation node id nodes deviation threshold
determines whether or not the given node has exceeded the deviation threshold
private void generate default availability policy element parent extendable string default availability policy definition id if default availability policy definition id null default availability policy definition id get inheritance inheritance inherited create text element parent default availability policy element default availability policy definition id to string
generates the default availability policy element
private void generate availability policies element parent collection factory definition availability policy availability policy definitions for factory definition availability policy factory def availability policy definitions if factory def get inheritance inheritance inherited generate availability policy parent factory def
generates availability policy elements for the given collection of availability policy definition factories
private element generate availability policy element parent factory definition availability policy factory def element availability policy element create element parent availability policy element availability policy element set attribute name attribute factory def get id generate def availability policy element factory def create text element availability policy element class name element factory def get factory class generate attributes availability policy element factory def get attributes return availability policy element
generates an availability policy element for the given availability policy definition factory