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package org.singinst.uf.common;
import java.util.Collection;
import org.singinst.uf.math.MathUtil;
public class StringUtil {
// Show probabilities as 25.57% or 0.2557?
private static final boolean PROBABILITY_AS_PERCENTAGE = true;
// Decimal digits to show for probabilities (i.e. 2 => 25.57% or 0.26)
private static final int PROBABILITY_DECIMALS = 2;
// Decimal digits to show for multipliers (i.e. 2 => 3.44x)
private static final int MULTIPLIER_DECIMALS = 2;
public static String join(String delimiter, Collection<String> collection) {
StringBuilder builder = new StringBuilder();
boolean first = true;
for (String string : collection) {
if (!first) {
builder.append(delimiter);
}
first = false;
builder.append(string);
}
return builder.toString();
}
/**
* Format a probability value for display.
* @param p
* @return
* @author henrik
*/
public static String formatProbability(double p) {
String value;
if (PROBABILITY_AS_PERCENTAGE)
value = MathUtil.round(p * 100, PROBABILITY_DECIMALS) + "%";
else
value = MathUtil.round(p, PROBABILITY_DECIMALS) + "";
return value;
}
/**
* Format a multiplier value for display.
* @param v
* @return
* @author henrik
*/
public static String formatMultiplier(double v) {
return MathUtil.round(v, MULTIPLIER_DECIMALS) + "x";
}
}
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