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ProvinceCities.java
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47 lines (41 loc) · 1.66 KB
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public class ProvinceCities {
public static void main(String[] args) {
System.out.println(" \" ");
System.out.println(" \\ ");
System.out.println(" \\\\ ");
//陕西 山西 四川 ....
//西安 咸阳 渭南 .... 成都 都江堰...
String[] provinces = {"陕西", "山西", "四川"};
//核心： 一维数组的下标 正好是 二维数组的行号
// 一维元素值->下标 -> 要打印的二维数组的行号 -> 将二维数组的该行全部打印
String[][] cities = {
{"西安", "咸阳", "渭南"},
{"太原", "运城", "大同"},
{"成都", "都江堰", "广元"}
};
// System.out.println(cities[1][1]);
// System.out.println(cities[1][2]);
// 一维元素值->下标
String p = "陕西";
int position = -1;
for (int i = 0; i < provinces.length; i++) {
if (p.equals(provinces[i])) {//{"陕西","山西","四川"} ;
position = i;//1
break;
}
}
//要打印的二维数组的行号 1
// String[][] cities = {
// {"西安","咸阳","渭南"}, 0
// {"太原","运城","大同"},1 : cities[1]
// {"成都","都江堰","广元"}2
// } ;
if (position == -1) {
System.out.println("省份输入有误！");
} else {
for (int i = 0; i < cities[position].length; i++) {
System.out.println(cities[position][i]);
}
}
}
}