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Kotlin 常用知识点汇总
2022-07-25 23:12:00 【享哥。】
val s="%.2f".format(8.956244) //8.96 数字四舍五入 2位小数
数字去尾法到2位小数
val format = DecimalFormat("0.##")
//未保留小数的舍弃规则，RoundingMode.FLOOR表示直接舍弃。
format.roundingMode = RoundingMode.FLOOR
val s2 = format.format(8.956756) //8.95
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