(UVA) Open Credit System - Solution

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(Coderbyte) Powers of Two - Solução

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Have the function PowersofTwo( num ) take the num parameter being passed which will be an integer and return the string true if it's a power of two. If it's not return the string false . For example if the input is 16 then your program should return the string true but if the input is 22 then the output should be the string false. Solução: import java.util.*; import java.io.*; class Function {    String PowersofTwo(int num) {       for (int i = 0; Math.pow(2, i) <= num; i++) {       if (Math.pow(2, i) == num) {            return "true";       }     }            return "false";       }     public static void main (String[] args) {      // keep this function call here         Scanner  s = new Scanner(Sy...
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(Coderbyte) Formatted Division - Solução

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Have the function FormattedDivision( num1 , num2 ) take both parameters being passed, divide num1 by num2 , and return the result as a string with properly formatted commas and 4 significant digits after the decimal place. For example: if num1 is 123456789 and num2 is 10000 the output should be "12,345.6789" . The output must contain a number in the one's place even if it is a zero. import java.util.*; import java.io.*; import java.text.*; class Function {    String FormattedDivision(int num1, int num2) {     DecimalFormat df = new DecimalFormat("#,##0.0000");     return df.format((double)num1/num2);       }     public static void main (String[] args) {      // keep this function call here         Scanner  s = new Scanner(System.in);     Function c = new Function();     System.out.print(c.FormattedDivision(s.nextLine()...
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(Coderbyte) Prime Time - Solução

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Using the Java language, have the function PrimeTime( num ) take the num parameter being passed and return the string true if the parameter is a prime number, otherwise return the string false . The range will be between 1 and 2^16. Solução: import java.util.*; import java.io.*; class Function {    String PrimeTime(int num) {     for (int i = 2; i < num; i++) {       if (num%i == 0) {         return "false";       }     }            return "true";       }     public static void main (String[] args) {      // keep this function call here         Scanner  s = new Scanner(System.in);     Function c = new Function();     System.out.print(c.PrimeTime(s.nextLine()));   ...
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