/* Используя оператор switch, написать программу,
* которая выводит на экран сообщения о принадлежности
* некоторого значения k интервалам
* (-10k, 0], (0, 5], (5, 10], (10, 10k]
*/
public class HelloWorld {
public static final int LESSER = 0;
public static final int BIGGER = 1;
public static void main(String[] args) {
int k = 5;
switch (k < 1 ? LESSER : BIGGER) {
case LESSER:
switch (k < -10_000 ? LESSER : BIGGER) {
case LESSER:
System.out.println(k + " is out of range");
break;
case BIGGER:
System.out.println(k + " is in range (-10k, 0]");
break;
}
break;
case BIGGER:
switch (k < 6 ? LESSER : BIGGER) {
case LESSER:
System.out.println(k + " is in range (0, 5]");
break;
case BIGGER:
switch (k < 11 ? LESSER : BIGGER) {
case LESSER:
System.out.println(k + " is in range (5, 10]");
break;
case BIGGER:
switch (k < 10_000 ? LESSER : BIGGER) {
case LESSER:
System.out.println(k + " is in range (10, 10k]");
break;
case BIGGER:
System.out.println(k + " is out of range");
break;
}
}
}
}
}
}
--------------------
/**
* Created by mutagen on 06.09.13.
*/
public class SwitchKungFu {
public static void main(String[] args) {
System.out.println(isInRange(2, new Range(0, 5)));
System.out.println(isInRange(6, new Range(0, 5)));
}
public static String isInRange(int i, Range range) {
switch (checkRange(range, i)) {
case 1:
return "Value " + i + " within " + range.toString();
case 0:
return "Value " + i + " not in " + range.toString();
}
return "";
}
static int checkRange(Range r, int i) {
if (i > r.getLow() && i < r.getHigh()) {
return 1;
} else {
return 0;
}
}
static class Range {
private int low;
private int high;
Range(int low, int high) {
this.low = low;
this.high = high;
}
public int getLow() {
return low;
}
public int getHigh() {
return high;
}
@Override
public String toString() {
return "range [" + low + ", " + high + ']';
}
}
}
----------------
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* Created by mutagen on 06.09.13.
*/
public class SwitchKungFu {
public static void main(String[] args) {
System.out.println(new Range("(0,5]").isInRange(2));
System.out.println(new Range("(0, 5]").isInRange(0));
System.out.println(new Range("(0,5]").isInRange(5));
System.out.println(new Range("[0,5]").isInRange(0));
}
static class Range {
private static Pattern pattern = Pattern.compile("(.)(\\d+),\\S*(\\d+)(.)");
private int low;
private int high;
private boolean lowInclude = false;
private boolean highInclude = false;
private String range;
Range(String range) {
this.range = range;
init();
}
private void init() {
Matcher matcher = pattern.matcher(this.range);
if (matcher.find()) {
String sign = matcher.group(1);
lowInclude = Boolean.valueOf("[".equals(sign));
low = Integer.valueOf(matcher.group(2));
high = Integer.valueOf(matcher.group(3));
sign = matcher.group(4);
highInclude = Boolean.valueOf("]".equals(sign));
}
}
public String isInRange(int i) {
switch (checkRange(i)) {
case 1:
return "Value " + i + " within " + this.toString();
case 0:
return "Value " + i + " not in " + this.toString();
}
return "";
}
private int checkRange(int i) {
if (lowInclude && highInclude) {
return (i >= low && i <= high) ? 1 : 0;
} else if (lowInclude && !highInclude) {
return (i >= low && i < high) ? 1 : 0;
} else if (!lowInclude && highInclude) {
return (i > low && i <= high) ? 1 : 0;
} else {
return (i > low && i < high) ? 1 : 0;
}
}
@Override
public String toString() {
return "range " + this.range;
}
}
}
--------------
import java.util.Scanner;
public class MadSwitch {
public static void main(String [] args) {
Scanner scan = new Scanner(System.in);
while ( true ) {
System.out.print("Number: ");
if ( ! scan.hasNextInt() )
break;
int n = scan.nextInt();
switch ( Boolean.compare( ( n <= -10000 ), true ) ) {
case 0 :
System.out.println("Less than or equals -10K");
break;
default :
switch ( Boolean.compare( ( n > 0 ), false ) ) {
case 0 :
System.out.println("Inside (-10K; 0]");
break;
default :
switch ( Boolean.compare( ( n > 5 ), false ) ) {
case 0:
System.out.println("Inside (0; 5]");
break;
default :
switch ( Boolean.compare( ( n > 10 ), false ) ) {
case 0 :
System.out.println("Inside (5; 10]");
break;
default :
switch ( Boolean.compare( ( n > 10000 ), false ) ) {
case 0:
System.out.println("Inside (10; 10K]");
break;
default :
System.out.println("Over 10K");
}
}
}
}
}
}
}
}
