题解 | #包含数字9的数#
包含数字9的数
http://www.nowcoder.com/practice/0948f4f3344c452f843afd3585dd0f8d
public class Main {
public static void main(String[] args) {
int count = 0;
for (int i = 1; i < 2020; i++) {
String num = String.valueOf(i);
boolean contains = num.contains("9");
if (contains){
count++;
}
}
System.out.println(count);
}
}
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