Can I multiply and divide by 10 and 100 and 1000? Teaching guidance Key vocabulary digit, decimal, multiply, times, divide, share, scale up, scale down, increase, decrease, factor, how many 100s in …?, tens of thousands, thousands, hundreds, tens, units, ones, tenths, hundredths, ...
doubleValue());//4.015 * 100=401.5 // BigDecimal dividend = new BigDecimal(303.1); BigDecimal dividend = new BigDecimal("303.1"); BigDecimal divisor = new BigDecimal(1000); int scale = 10;//保留几位有效数字 result = dividend.divide(divisor, scale, RoundingMode.HALF_UP); System.out.println...
Divide by three, multiply by two CodeForces - 977D(dfs vector记录答案并利用vector回溯) em...虽然自己想到了dfs回溯解决这个问题,结果却咋实现“记录答案但是如果答案不对,答案也要回溯”这个问题上翻了车。(原谅菜鸡我没有想到可以直接v.pop_back(),em...以前基本没用过这个功能,这里记录一下),参考了大...