一、測試環境

名稱版本

操作系統	Red Hat Enterprise Linux Server release 7.9 (Maipo)
CPU	12th Gen Intel? Core? i7-12700H
內存	5G
JDK	1.8.0_171
Scala	3.1.2

二、功能實現

Int類型數據由十進制轉換為二進制。

三、源碼

object Decimal2Binary {def PrintDecimalSystemArray(TempArray: Array[Int], TempArraySize : Int): Unit = {var i: Int = 0val SpaceNum = 4for(i <- 0 until TempArraySize){printf("%d",TempArray(i))if((i+1) % SpaceNum == 0) {printf(" ")}}printf("\n")}def DecimalSystem2Binary(DecimalNum: Int): Unit = {val ArraySize: Int = 32var TempNum: Int = DecimalNumvar RemainderArray: Array[Int] = new Array[Int](ArraySize)val SystemNum = 2var i: Int = 0var Flag: Int = 1 // 1 : + , -1 : -for(i <- 0 until ArraySize){if(i == 0 && DecimalNum < 0){RemainderArray(i) = 1Flag = -1}else {RemainderArray(i) = 0}}//PrintDecimalSystemArray(RemainderArray, ArraySize)i = ArraySize - 1while(TempNum != 0){RemainderArray(i) = (TempNum % SystemNum).absprintf("%4d / %d = ",TempNum,SystemNum)TempNum = TempNum / SystemNumprintf("%4d --- %2d\n",TempNum,RemainderArray(i) * Flag)i -= 1}PrintDecimalSystemArray(RemainderArray, ArraySize)}def main(args: Array[String]): Unit = {DecimalSystem2Binary(-126)DecimalSystem2Binary(130)} }

四、編譯

[root@node0 src]# scalac Decimal2Binary.scala -d ../test/

五、測試結果

[root@node0 test]# scala Decimal2Binary -126 / 2 = -63 --- 0-63 / 2 = -31 --- -1-31 / 2 = -15 --- -1-15 / 2 = -7 --- -1-7 / 2 = -3 --- -1-3 / 2 = -1 --- -1-1 / 2 = 0 --- -1 1000 0000 0000 0000 0000 0000 0111 1110 130 / 2 = 65 --- 065 / 2 = 32 --- 132 / 2 = 16 --- 016 / 2 = 8 --- 08 / 2 = 4 --- 04 / 2 = 2 --- 02 / 2 = 1 --- 01 / 2 = 0 --- 1 0000 0000 0000 0000 0000 0000 1000 0010

總結

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