algorithm - Find Shortest Path -

-

there’s m*n grid, filled black , white color. given start point , end point. white points passed, how find shortest path between start , end?

any thoughts appreciated.

there multiple algorithm matter, of important algorithms :

dijkstra

dijkstra animation

bellman ford

bellman ford image

floyd warshall

enter image description here

even bfs algorithms choice.

bfs animation


Comments

Post a Comment

Popular posts from this blog

c++ - QTextObjectInterface with Qml TextEdit (QQuickTextEdit) -

-
i registred handler simple qtextobjectinterface , draws 10x10 red rectangle. when used qtextedit in normal qwidget app, worked. when used qquicktextedit (textedit qml component) in qt quick app, doesn't worked (nothing drawed, rectangle in textedit reserved, because when change cursor position, notice there something, empty space, nothing drawed. qtextobjectinterface intrinsicsize method called (that explains why see there empty space 10x10), drawobject method isn't. i did research , found problem here: qquicktextedit.cpp qt 5.3.0 sources (line 1821) qsgnode *qquicktextedit::updatepaintnode(qsgnode *oldnode, updatepaintnodedata *updatepaintnodedata) { . . . if (textframe->firstposition() > textframe->lastposition() && textframe->frameformat().position() != qtextframeformat::inflow) { updatenodetransform(node, d->document->documentlayout()->frameboundingrect(textframe).topleft()); c...
Read more

xcode - Swift Playground - Files are not readable -

-
Image
files not readable in swift playground . how make files readable? same code runs on xcode terminal app, fails on swift playground. demo code below. import foundation println("hello, world!") var fname:string = "/users/holyfield/desktop/com.apple.iconcomposer.plist" var fm:nsfilemanager = nsfilemanager.defaultmanager() if(fm.fileexistsatpath(fname)){ println("file exists") if(fm.isreadablefileatpath(fname)){ println("file readable") var fd:nsdata? = nsdata(contentsoffile: fname) println(fd?.length) let pl = nsdictionary(contentsoffile: fname) println(pl?.count) println(pl?.allkeys) }else{ println("file not readable") } } else{ println("file not exists") } sample images: i have thank nate cook first quick response , solid answer. just case share answer post, title misleading. see nate's answer here: https://stackoverf...
Read more

windows - How to automate a file conversion xwm to mp3 with xwmaencode.exe using bat file -

-
the code required run is: xwmaencode.exe .xwm . wanna make .bat file can allow me drag , drop file or convert of .xwm files within current folder .mp3 preferrably an explanation of each part well, have no clue how .bat files operate, , have limited knowledge on cmd syntax, can manage if don't mind file.xwm.wav (and there utilities out there that'll remove .xwm*), did taken pngout.exe's examples: for %i in (*.xwm) xwmaencode %i %i.wav in case, don't have files spaces, if did, you'd do for %i in (*.xwm) xwmaencode "%i" "%i".wav *powershell might, have no idea
Read more