Question

我想将一个句子37 37“”与3个结果分开，如37 37''，并将每个结果保存为3个变量。这是我的代码

public class Graph<T extends Comparable <T>> {
private Vertex<T> head; 
private int size;
private boolean isDirected;     
private boolean hasEdgeValue;  
private T startState;
private List finishedState;
public Graph() {    this(false, false); }
public Graph(boolean isDirected, boolean hasEdgeValue) {
    head = null;
    size = 0;
    finishedState = new LinkedList<T>();
    this.isDirected = isDirected;
    this.hasEdgeValue = hasEdgeValue;
}
public void createGraph(Scanner inFile) {
    T fromVert, toVert;
    T weight; //weight
    while(inFile.hasNext()) {
        fromVert = (T) inFile.next();//save 37 here
        toVert = (T) inFile.next();//save 37 here
        if(hasEdgeValue) { 
            weight = (T) inFile.next(); //save ' '(white-space or a if inpute is "a" here
            insertVertex(fromVert);
            insertVertex(toVert);
            insertEdge(fromVert, toVert, weight);
            if(!isDirected) {
                insertEdge(toVert, fromVert, weight);
            }
        }
        else {
            insertVertex(fromVert);
            insertVertex(toVert);
            insertEdge(fromVert, toVert, null);
            if(!isDirected) {
                insertEdge(toVert, fromVert, null);
            }
        }
    }
}

}

这是我的输入数据

14 37“”

37 37“a”

37 37“b”

37 37“c”

37 37“d”

37 37“e”

我用useDelimeter但是它不起作用请帮助我结果应为fromVert为37，toVert 37，如果输入为37 37，则权重为''

Answer 1

    while (inFile.hasNextLine()){

            String data = inFile.hasNextLine();
            if(!data.isEmpty()) {
                int i = data.indexOf('"');
                String sentance = data.substring(0,i);
                String betweenQuote = data.substring(i+1, data.length()-1);
                String[] verts = sentance.split(" ");
                fromVert = verts[0];
                toVert = verts[1];
                weight = betweenQuote;
            }
    }

你可能不想使用Next（）＆lt; - 因为这会自动跳过空格。而是使用包含空格的NextLine（）。然后可能会做一些字符串操作，这通常会解决你的问题。

如何分隔包含空格，数字和字符串的句子？

1 个答案: