java.入门
public static void main(String[] args) {
//long 长整数型
long cash = 100000000000L;
//整数变量,计算器
int count = 0;
//while语句
while (cash > 1) {
cash = cash / 2;
count = count + 1;
}
System.out.println("count = " + count);
}
}

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