import java.util.Arrays;
public class Tseparation {
/**
* å¦ä½æä¸ä¸ªæ´åæ°ç»ä¸ï¼å¥æ°å¶æ°è¿è¡å离ãå¦åé¢æ¾å¥æ°ï¼åé¢æ¾å¶æ°
*
* åææ¡ä»¶ï¼ä¸å¼å
¥æ°çæ°ç»,ä¸æ¬¡for循ç¯
*
* åºæ¬ææ³ï¼ä¸æ¬¡å¾ªç¯ï¼ä¸ä¸ªæéå¾åèµ°ï¼ä¸ä¸ªæéå¾åèµ°
*
* @param args
*/
public static void main(String[] args) {
int[] arrays = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
int count = 0;
int last_index = arrays.length - 1;
System.out.println("æ°ç»é¿åº¦: " + arrays.length);
// forä¸çç»ææ¡ä»¶æ¯ï¼åé¢ä¸æ ä½ç½®å¤§äºåé¢å°æ ä½ç½®ï¼ç¸å½äºä¸ä¸ªä»åé¢å¼å§èµ°ï¼ä¸ä¸ªä»åé¢å¼å§èµ°ï¼ä¸é´ä½ç½®ç¸éå°±ä¸èµ°äº
for (int first_index = 0; first_index < last_index; first_index++) {
count++;
System.out.println(" first_index: " + first_index + " - last_index: " + last_index);
int last = arrays[last_index];
int first = arrays[first_index];
// æ
åµ1ï¼å¦æåé¢æ¯å¶æ°ï¼åé¢æ¯å¥æ°ï¼å交æ¢ä½ç½®
if (first % 2 == 0 && last % 2 != 0) {
arrays[last_index] = first;
arrays[first_index] = last;
last_index--;// æ¤å¤æ³¨æåé¢çä¸æ ä½ç½®å¾å移ï¼èåé¢çä¸æ ä½ç½®ä¼å¨for循ç¯ä¸first_index++å¾å移å¨
} else if (first % 2 == 0 && last % 2 == 0) {
// æ
åµ2ï¼åªæä¸ç§æ
åµï¼åé¢å¶æ°ï¼åé¢ä¹æ¯å¶æ°ï¼éè¦åé¢ä¸æ ä¸åï¼èåé¢éè¦å¾å移å¨
last_index--;
first_index--;
} else if (first % 2 != 0 && last % 2 == 0) {
// æ
åµ3ï¼åé¢æ¯å¥æ° åé¢æ¯å¶æ°ï¼è¿å·²ç»æ¯æ们éè¦ç,åé¢ä¸æ å¾åé¢èµ°ï¼åé¢ä¸æ å¨for循ç¯ä¸å¾å移å¨
last_index--;
} else {
// æ
åµ4ï¼åé¢æ¯å¥æ°ï¼åé¢ä¹æ¯å¥æ°,åé¢ä¸åä»»ä½æä½ï¼åé¢ä¸æ ä½ç½®å¨forä¸ä¼å¾å移å¨
// ä»ä¹ä¹ä¸éè¦å¹²ï¼å 为åé¢çä½ç½®æ¬æ¥å°±ä¸ä¼å¨forä¸ç§»å¨
}
}
System.out.println("æ»å
±å¾ªç¯æ¬¡æ°ï¼" + count);
System.out.println(Arrays.toString(arrays));
}
}
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