(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) Dash Insert II - Solução

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Have the function DashInsertII( str ) insert dashes ('-') between each two odd numbers and insert asterisks ('*') between each two even numbers in str . For example: if str is 4546793 the output should be 454*67-9-3 . Don't count zero as an odd or even number. import java.util.*; import java.io.*; class Function {    String DashInsertII(String num) {     int anterior = Integer.parseInt(String.valueOf(num.charAt(0)));     String resultado = String.valueOf(num.charAt(0));         for (int i = 1; i < num.length(); i++) {       int atual = Integer.parseInt(String.valueOf(num.charAt(i)));       if (anterior%2 == 0 && atual%2 == 0 && anterior != 0 && atual != 0) {         resultado += "*";       }       else if (anterior%2 == 1 && atual%2 == 1) { ...
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(CoderByte) Number Search - Solução

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Using the Java language, have the function NumberSearch( str ) take the str parameter, search for all the numbers in the string, add them together, then return that final number. For example: if str is "88Hello 3World!" the output should be 91 . You will have to differentiate between single digit numbers and multiple digit numbers like in the example above. So "55Hello" and "5Hello 5" should return two different answers. Each string will contain at least one letter or symbol. Solução: import java.util.*; import java.io.*; import java.lang.*; class Function {   int NumberAddition(String str) {     String numeros = "";     boolean apareceuNumero = false;     for (int i = 0; i < str.length(); i++) {       if (Character.isDigit(str.charAt(i))) {           numeros += str.charAt(i);         apareceuNumero = true;   ...
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