回答編集履歴
1
ソースの追加(BigDecimal)
test
CHANGED
@@ -40,7 +40,7 @@
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-
public class Mi
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public class Main {
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@@ -89,3 +89,81 @@
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}
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```
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<追記>
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BigDecimalを使ったときのソースです。
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```Java
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import java.util.Scanner;
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import java.math.BigDecimal;
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public class Main {
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public static void main(String args[]) {
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Scanner sc = new Scanner(System.in);
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String line = sc.nextLine();
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double number = Double.parseDouble(line);
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BigDecimal a = new BigDecimal(number);
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BigDecimal x = new BigDecimal("2.0");
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BigDecimal delta = new BigDecimal("1.0");
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BigDecimal sisu = new BigDecimal(1.0E-15);
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int count = 0;
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while (sisu.compareTo(delta) == -1) {
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BigDecimal f = (x.multiply(x.multiply(x))).subtract(a);
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BigDecimal df = x.multiply(x).multiply(new BigDecimal("3.0"));
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x = x.subtract(f.divide((df),BigDecimal.ROUND_HALF_UP));
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delta = ((x.multiply(x.multiply(x))).subtract(a)).abs();
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count++;
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System.out.println(count + "回目 誤差=" + delta);
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}
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System.out.println("x = " + x);
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System.out.println("x * x * x = " + x.multiply(x.multiply(x)));
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}
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}
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```
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