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Commit 5393c66

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Lines changed: 37 additions & 0 deletions
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/*----------------------------------------------------------------------------------------------------------------------
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Sınıf Çalışması: Klavyeden alınan gün, ay ve yıl bilgilerine göre kişinin doğum günü geçmişse
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"geçmiş doğum gününü kutlu olsun", o an doğum günü ise "doğum gününüz kutlu olsun", doğum henüz gelmemişse
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"doğum gününüz şimdiden kutlu olsun" mesajlarından birini ekrana basan programı Calendar sınıfını kullanarak yazınız
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----------------------------------------------------------------------------------------------------------------------*/
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package org.csystem.app;
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import org.csystem.util.Console;
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import java.util.Calendar;
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class App {
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public static void main(String[] args)
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{
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Calendar now = Calendar.getInstance();
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Console.writeLine("%02d/%02d/%04d %02d:%02d:%02d.%03d",
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now.get(Calendar.DAY_OF_MONTH),
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now.get(Calendar.MONTH) + 1,
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now.get(Calendar.YEAR),
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now.get(Calendar.HOUR_OF_DAY),
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now.get(Calendar.MINUTE),
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now.get(Calendar.SECOND),
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now.get(Calendar.MILLISECOND));
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now.set(Calendar.HOUR_OF_DAY, 10);
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Console.writeLine("%02d/%02d/%04d %02d:%02d:%02d.%03d",
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now.get(Calendar.DAY_OF_MONTH),
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now.get(Calendar.MONTH) + 1,
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now.get(Calendar.YEAR),
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now.get(Calendar.HOUR_OF_DAY),
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now.get(Calendar.MINUTE),
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now.get(Calendar.SECOND),
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now.get(Calendar.MILLISECOND));
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}
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}
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package org.csystem.samples.recurison;
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public class RecursionUtil {
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private static int getFibonacciNumberRecur(int n)
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{
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if (n <= 2)
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return n - 1;
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return getFibonacciNumberRecur(n - 1) + getFibonacciNumberRecur(n - 2);
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}
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private static void getReverse(char [] c, int left, int right)
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{
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if (left >= right)
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return;
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char temp;
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temp = c[left];
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c[left] = c[right];
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c[right] = temp;
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getReverse(c, left + 1, right - 1);
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}
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private static void writeNumberRecur(int val)
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{
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if (val / 10 != 0)
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writeNumber(val / 10);
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System.out.write((char)(val % 10 + '0'));
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}
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private static void writeNumberRecur(int val, int radix)
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{
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if (val / radix != 0)
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writeNumberRecur(val / radix, radix);
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//System.out.write((char)(val % radix >= 10 ? val % radix - 10 + 'A' : val % radix + '0'));
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System.out.write((char)((val % radix >= 10 ? - 10 + 'A' : '0') + val % radix));
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}
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private static void writeReverse(String s, int i)
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{
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if (i == s.length())
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return;
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writeReverse(s, i + 1);
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System.out.write(s.charAt(i));
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}
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public static long factorial(int n)
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{
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if (n <= 0)
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return 1;
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return n * factorial(n - 1);
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}
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public static int getFibonacciNumber(int n)
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{
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if (n <= 0)
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return -1;
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return getFibonacciNumberRecur(n);
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}
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public static String getReverse(String s)
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{
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char [] c = s.toCharArray();
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getReverse(c, 0, c.length - 1);
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return String.valueOf(c);
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}
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public static void writeNumber(int val)
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{
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if (val < 0) {
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System.out.write('-');
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val = -val;
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}
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writeNumberRecur(val);
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System.out.flush();
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}
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public static void writeNumber(int val, int radix)
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{
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if (val < 0) {
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System.out.write('-');
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val = -val;
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}
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writeNumberRecur(val, radix);
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System.out.flush();
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}
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public static void writeReverse(String s)
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{
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writeReverse(s, 0);
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System.out.flush();
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}
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}
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package org.csystem.samples.recurison;
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public class Util {
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public static long factorial(int n)
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{
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long result = 1;
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for (; n > 1; --n)
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result *= n;
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return result;
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}
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public static int getFibonacciNumber(int n)
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{
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if (n <= 0)
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return -1;
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if (n <= 2)
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return n - 1;
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int prev1 = 0, prev2 = 1, val = 0;
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for (int i = 2; i < n; ++i) {
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val = prev1 + prev2;
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prev1 = prev2;
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prev2 = val;
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}
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return val;
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}
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public static String getReverse(String s)
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{
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return new StringBuilder(s).reverse().toString();
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}
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public static void writeNumber(int val)
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{
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if (val == 0) {
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System.out.write('0');
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return;
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}
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char [] s = new char[11];
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int i;
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boolean isNegative;
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isNegative = false;
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if (val < 0) {
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isNegative = true;
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val = -val;
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}
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for (i = 0; val != 0; ++i) {
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s[i] = (char)(val % 10 + '0');
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val /= 10;
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}
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if (isNegative)
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s[i++] = '-';
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for (--i; i >= 0; --i)
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System.out.write(s[i]);
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System.out.flush();
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}
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public static void writeReverse(String s)
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{
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for (int i = s.length() - 1; i >= 0; --i)
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System.out.write(s.charAt(i));
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System.out.flush();
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}
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}

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