请教 循环

[iabcz]

我想得到以下树状结果，[三街]为根节点，其中a2,a3,a5三个子节点被勾选
[三街]
a1
a2
a3
a4
a5
a6
可是为什么我的程序的双重循环后结果不对；

public static String tree() {
StringBuffer strResult = new StringBuffer();

String[] s = { "a2", "a5", "a3" };
String[] st = { "a1", "a2", "a3", "a4", "a5", "a6" };

strResult.append("[三街]<br> ");

for (int i = 0; i < st.length; i++) {
for (int j = 0; j < s.length; j++) {
if (st[i].equals(s[j])) {
strResult.append("<input type=\"checkbox\" checked />"
+ st[i] + "<br>");
} else {
strResult.append("<input type=\"checkbox\">" + st[i]
+ "<br>");
}
}
}
String treestr = strResult.toString();
return treestr;
}

请帮我改改

[LYWTC128]

public static String tree() {
StringBuffer strResult = new StringBuffer();

String[] s = { "a2", "a5", "a3" };
String[] st = { "a1", "a2", "a3", "a4", "a5", "a6" };

strResult.append("[三街] <br> ");

for (int i = 0; i < st.length; i++) {
for (int j = 0; j < s.length; j++) {
if (st[i].equals(s[j])) {
strResult.append(" <input type=\"checkbox\" checked />"
+ st[i] + " <br>");
}
}

strResult.append(" <input type=\"checkbox\">" + st[i]
+ " <br>");

}
String treestr = strResult.toString();
return treestr;
}

[iabcz]

还是不对呀

[eassen_licd]

public static String tree1() {
StringBuffer strResult = new StringBuffer();

String[] s = { "a2", "a5", "a3" };
String[] st = { "a1", "a2", "a3", "a4", "a5", "a6" };

strResult.append("[三街] <br> ");

for (int i = 0; i < st.length; i++) {
boolean isCheck = false;
for (int j = 0; j < s.length; j++) {
if (st[i].equals(s[j])) {
strResult.append(" <input type=\"checkbox\" value=\""+st[i]+"\" checked>"
+ st[i] + " <br>");
isCheck = true;
}
}
if(!isCheck){
strResult.append(" <input type=\"checkbox\" value=\""+st[i]+"\">" + st[i] + " <br>");
}


}
String treestr = strResult.toString();
System.out.println(treestr);
return treestr;
}

[gcl800]

顶

[fy_kenny]

用 checked =true 试试看

[zjhlht]

学习~~~~~

[endswel]

	public static String tree() {
		StringBuffer strResult = new StringBuffer();

		String[] s = { "a2", "a5", "a3" };
		String[] st = { "a1", "a2", "a3", "a4", "a5", "a6" };

		strResult.append("[三街] <br> ");
		int k = -1;
		for (int i = 0; i < st.length; i++) {
			k = -1;
			for (int j = 0; j < s.length; j++) {
				if (st[i].equals(s[j])) {
					k = i;
				}
			}
			if (k > -1) {
				strResult.append(" <input type=\"checkbox\" checked />"
						+ st[i] + " <br>\n");
			} else {
				strResult.append(" <input type=\"checkbox\">" + st[i]
				                       							+ " <br>\n");
			}
		}
		String treestr = strResult.toString();
		//System.out.println(treestr);
		return treestr;
	}

[endswel]

public static String tree() {
StringBuffer strResult = new StringBuffer();

String[] s = { "a2", "a5", "a3" };
String[] st = { "a1", "a2", "a3", "a4", "a5", "a6" };

strResult.append("[三街] <br> ");
int k = -1;
for (int i = 0; i < st.length; i++) {
k = -1;
for (int j = 0; j < s.length; j++) {
if (st[i].equals(s[j])) {
k = i;
}
}
if (k > -1) {
strResult.append(" <input type=\"checkbox\" checked />"
+ st[i] + " <br>\n");
} else {
strResult.append(" <input type=\"checkbox\">" + st[i]
+ " <br>\n");
}
}
String treestr = strResult.toString();
System.out.println(treestr);
return treestr;
}