算法練習（使用空循環）

1. 刪除所有的重複值
   Data = {2,2,2,3,3,4,4,4,4,5,5,6}
   結果：{2,3,4,5,6}

#include<stdio.h>
int main(void)
{
	int Data[] = {2,2,2,3,3,4,4,4,4,5,5,6};
	int i, j;
	int len = sizeof(Data) / sizeof(Data[0]);
	for (i = 0, j = 0; i < len && ((Data[i] == Data[i+1]) || (Data[j++] = Data[i],1)); i++);
	for (i = 0; i < j; i++) {
		printf("%d ",Data[i]);
	}
	return 0;	
} 

2. 設 Data 無序且不含有重複值，且值均爲正整數，刪除所有的奇數。

#include <stdio.h>
int main(void)
{
	int Data[] = {1,5,6,7,3,4,8,9,2};
	int i, j;
	int len = sizeof(Data) / sizeof(Data[0]);
	for (i = 0, j = 0; i < len && (Data[i] % 2 !=0 || (Data[j++] = Data[i])); i++);
	for (i = 0; i < j; i++) {
		printf("%d ",Data[i]);
	}
	return 0;
}

3. 刪除一個字符串中所有的小寫字符a
   hsaPada

#include <stdio.h>
int main(void)
{
	char Data[] = "hsaPada" ;
	int i = 0, j = 0;
	int len = sizeof(Data) / sizeof(Data[0]);
	printf("%d\n", len);
	for (i=0,j=0; Data[i] && (Data[i] == 'a' || (Data[j++] = Data[i])); i++);
	Data[j] = 0;
	printf("%s ",Data);
	return 0;
}