我有要畫線的坐標(biāo)列表。實(shí)際上問題是這些坐標(biāo)不按順序排列。結(jié)束線的坐標(biāo)是另一條線的起始線的坐標(biāo)。如果任何線的結(jié)束線坐標(biāo)與另一條線的起始坐標(biāo)不匹配，則創(chuàng)建連接線列表。線的坐標(biāo)為startx，starty，endx，endy。下面是線坐標(biāo)列表。3350 1500 3200 15001450 1750 1450 22001450 2200 2100 22002400 2200 2550 22002550 2200 2550 23502550 2350 2850 23502850 2350 2850 27002850 2700 3350 27003650 2700 3750 27003750 2700 3750 26003750 2600 5250 26005250 2600 5250 23505250 2350 5000 23504700 2350 4350 23504350 2350 4350 16004350 1600 3650 16003650 1600 3650 15003200 1500 3200 17503200 1750 1450 1750這里最后兩條線坐標(biāo)實(shí)際上位于第二和第三位置。3200 1500 3200 17503200 1750 1450 1750我的要求是創(chuàng)建所有相互連接的線。List<DeviceElement> outerListWire= new ArrayList<DeviceElement>(schematicImporter.listOfWires);List<DeviceElement> innerListWire = new ArrayList<DeviceElement>(schematicImporter.listOfWires); List<DeviceElement> listWireTemp = new ArrayList<DeviceElement>();for (int j = 0; j < outerListWire.size(); j++) { Wire wire1 = (Wire) outerListWire.get(j); for (int i = 0; i < innerListWire.size(); i++) { Wire wire2 = (Wire) innerListWire.get(i); if (wire1.getEndPoint().getX() == wire2.getStartPoint().getX() && wire1.getEndPoint().getY() == wire2.getStartPoint().getY() ) { if (!listWireTemp.contains(wire1)) { listWireTemp.add(wire1); System.out .println("wire1 = " + wire1.getStartPoint().toString() + " = " + wire1.getEndPoint().toString()); innerListWire.remove(wire1); } if (!listWireTemp.contains(wire2)) { listWireTemp.add(wire2); System.out .println("wire2 = " + wire2.getStartPoint().toString() + " = " + wire2.getEndPoint().toString()); innerListWire.remove(wire2); } } }}我已經(jīng)嘗試過上面的代碼，但坐標(biāo)列表仍然沒有按順序排列。
1 回答
MM們
TA貢獻(xiàn)1886條經(jīng)驗(yàn) 獲得超2個(gè)贊
基于以下假設(shè)進(jìn)行更新：
問題中給出的第一行坐標(biāo)表示連接線集中第一條線的坐標(biāo)
找到第一組連接線后，問題中給出的剩余坐標(biāo)線中第一條未使用的線將被視為下一組連接線中第一條線的坐標(biāo)，依此類推，直到問題中給出的坐標(biāo)列表為止問題排氣。
所需的邏輯在Main.java. 我還創(chuàng)建Point.java并Line.java測(cè)試了邏輯。如果您遇到任何問題，請(qǐng)隨時(shí)告訴我。
Point.java
public class Point {
int x,y;
public Point(int x, int y) {
super();
this.x = x;
this.y = y;
}
public int getX() {
return x;
}
public void setX(int x) {
this.x = x;
}
public int getY() {
return y;
}
public void setY(int y) {
this.y = y;
}
@Override
public String toString() {
return "Point [x=" + x + ", y=" + y + "]";
}
}
Line.java
public class Line {
int x1,y1,x2,y2;
Point start,end;
boolean used;
public Line(int x1, int y1, int x2, int y2) {
super();
this.x1 = x1;
this.y1 = y1;
this.x2 = x2;
this.y2 = y2;
}
public Line(Point start, Point end) {
super();
this.start = start;
this.end = end;
}
public int getX1() {
return x1;
}
public void setX1(int x1) {
this.x1 = x1;
}
public int getY1() {
return y1;
}
public void setY1(int y1) {
this.y1 = y1;
}
public int getX2() {
return x2;
}
public void setX2(int x2) {
this.x2 = x2;
}
public int getY2() {
return y2;
}
public void setY2(int y2) {
this.y2 = y2;
}
public Point getStart() {
return start;
}
public void setStart(Point start) {
this.start = start;
}
public Point getEnd() {
return end;
}
public void setEnd(Point end) {
this.end = end;
}
public boolean isUsed() {
return used;
}
public void setUsed(boolean used) {
this.used = used;
}
@Override
public String toString() {
return "Line [x1=" + x1 + ", y1=" + y1 + ", x2=" + x2 + ", y2=" + y2 + "]";
}
}
Main.java
import java.util.ArrayList;
import java.util.List;
class Main {
public static void main(String args[]) {
List<Line> givenLines = new ArrayList<Line>();
givenLines.add(new Line(3350, 1500, 3200, 1500));
givenLines.add(new Line(1450, 1750, 1450, 2200));
givenLines.add(new Line(1450, 2200, 2100, 2200));
givenLines.add(new Line(2400, 2200, 2550, 2200));
givenLines.add(new Line(2550, 2200, 2550, 2350));
givenLines.add(new Line(2550, 2350, 2850, 2350));
givenLines.add(new Line(2850, 2350, 2850, 2700));
givenLines.add(new Line(2850, 2700, 3350, 2700));
givenLines.add(new Line(3650, 2700, 3750, 2700));
givenLines.add(new Line(3750, 2700, 3750, 2600));
givenLines.add(new Line(3750, 2600, 5250, 2600));
givenLines.add(new Line(5250, 2600, 5250, 2350));
givenLines.add(new Line(5250, 2350, 5000, 2350));
givenLines.add(new Line(4700, 2350, 4350, 2350));
givenLines.add(new Line(4350, 2350, 4350, 1600));
givenLines.add(new Line(4350, 1600, 3650, 1600));
givenLines.add(new Line(3650, 1600, 3650, 1500));
givenLines.add(new Line(3200, 1500, 3200, 1750));
givenLines.add(new Line(3200, 1750, 1450, 1750));
int linesIndex, usedCounter=0;
List<List<Line>> listOfConnectedLines = new ArrayList<List<Line>>();
//The start (first) line, in the list of given lines, to be processed to find the first set of connected lines
Line startLineforTheNextSetOfConnectedLines=givenLines.get(0);
startLineforTheNextSetOfConnectedLines.setUsed(true);
usedCounter = 1;
//Process the list of given lines until all the lines have been used to form the connected lines
while (usedCounter < givenLines.size()) {
linesIndex = 0;
List<Line> connectedLines = new ArrayList<Line>();
connectedLines.add(linesIndex, startLineforTheNextSetOfConnectedLines);
Line nextLine=null;
//Starting with startLineforTheNextSetOfConnectedLines, the variable lastArrangedLine will hold the next lines qualifying to become the connected line
Line lastArrangedLine=startLineforTheNextSetOfConnectedLines;
//Create the list of connected lines starting with startLineforTheNextSetOfConnectedLines
for (int i = 0; i < givenLines.size(); i++) {
for (int j = 0; j < givenLines.size(); j++) {
nextLine=givenLines.get(j);
if (!nextLine.isUsed() && lastArrangedLine.getX2() == nextLine.getX1()
&& lastArrangedLine.getY2() == nextLine.getY1()) {
nextLine.setUsed(true);
usedCounter++;
connectedLines.add(++linesIndex, nextLine);
lastArrangedLine = nextLine;
break;
}
}
}
//Add the list of connected lines (found from the above nested for loops) to the list of connected lines
listOfConnectedLines.add(connectedLines);
//Find the start (first) line for the next set of connected lines
for (int i = 0; i < givenLines.size(); i++) {
if(!givenLines.get(i).isUsed()) {
startLineforTheNextSetOfConnectedLines=givenLines.get(i);
startLineforTheNextSetOfConnectedLines.setUsed(true);
usedCounter++;
break;
}
}
}
//Display the lists of connected lines
for(List<Line> connectedLines:listOfConnectedLines)
System.out.println(connectedLines);
}
}
給定行列表的輸出：
[Line [x1=3350, y1=1500, x2=3200, y2=1500], Line [x1=3200, y1=1500, x2=3200, y2=1750], Line [x1=3200, y1=1750, x2=1450, y2=1750], Line [x1=1450, y1=1750, x2=1450, y2=2200], Line [x1=1450, y1=2200, x2=2100, y2=2200]]
[Line [x1=2400, y1=2200, x2=2550, y2=2200], Line [x1=2550, y1=2200, x2=2550, y2=2350], Line [x1=2550, y1=2350, x2=2850, y2=2350], Line [x1=2850, y1=2350, x2=2850, y2=2700], Line [x1=2850, y1=2700, x2=3350, y2=2700]]
[Line [x1=3650, y1=2700, x2=3750, y2=2700], Line [x1=3750, y1=2700, x2=3750, y2=2600], Line [x1=3750, y1=2600, x2=5250, y2=2600], Line [x1=5250, y1=2600, x2=5250, y2=2350], Line [x1=5250, y1=2350, x2=5000, y2=2350]]
[Line [x1=4700, y1=2350, x2=4350, y2=2350], Line [x1=4350, y1=2350, x2=4350, y2=1600], Line [x1=4350, y1=1600, x2=3650, y2=1600], Line [x1=3650, y1=1600, x2=3650, y2=1500]]
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