public class FindGroup {
public static void main(String[] args) {
printGroup(3, 4, 3);
}
public static void printGroup(int w, int h, int n) {
for (int x = 1; x <= w - n + 1; x++) {
for (int y = 1; y <= h - n + 1; y++) {
printGroup(valueOf(x, y), x + 1, w, y, h, n - 1);
}
}
}
private static void printGroup(String prifix, int w1, int w2,
int h1, int h2, int n) {
if (n == 0) {
System.out.println(prifix);
return;
}
for (int x = w1; x <= w2 - n + 1; x++) {
for (int y = h1; y <= h2 - n + 1; y++) {
printGroup(prifix + ", " + valueOf(x, y),
x + 1, w2, h1, h2, n - 1);
}
}
}
private static String valueOf(int x, int y) {
return "x" + x + y;
}
}下面为输出：x11, x21, x31
x11, x21, x32
x11, x21, x33
x11, x21, x34
x11, x22, x31
x11, x22, x32
x11, x22, x33
x11, x22, x34
x11, x23, x31
x11, x23, x32
x11, x23, x33
x11, x23, x34
x12, x22, x32
x12, x22, x33
x12, x22, x34
x12, x23, x32
x12, x23, x33
x12, x23, x34printGroup(int w, int h, int n)
函数说明：w为列,h为行,n为题目中的X
可能不太满足题意,请明确说明以下问题.
1.第一个数代表列,还是第二个数代表列?2.排列组合有顺序吗?3.必须前面的列在前面吗?例如必须先取第一列,再取第二列或第三列