作业讲解

Posted 2021-08-01 垚垚是小白

创建一个整型数组，完成对数组的操作

1.实现函数inti,初始化数组全为0
2.实现函数printf，打印数组的每一个元素
3.实现reverse（）函数。完成数组元素的逆置

void Init(int arr[], int sz) {
	int i = 0;
	for (i = 0; i < sz; i++) {
		arr[i] = 0;
	}
}
void Print(int arr[], int sz) {
	int i = 0;
	for (i = 0; i < sz; i++) {
		printf("%d\\n", arr[i]);
	}
}
void Reverse(int arr[], int sz) {
	int left = 0;
	int right = sz - 1;

	while (left < right) {
		int tem = arr[left];
		arr[left] = arr[right];
		arr[right] = tem;
		left++;
		right--;
	}
}
int main() {
	int arr[10] = { 1,2,3,4,5,6,7,8,9,10 };
	int sz = sizeof(arr) / sizeof(arr[0]);
	//Init(arr,sz);//把数组初始化为0
	Reverse(arr, sz);
	Print(arr, sz);

	return 0;
}

将数组A和数组B中的元素进行交换

# include<stdio.h>
int main() {
	int arr1[] = { 1,3,5,7 ,9};
	int arr2[] = { 2,4,6,8 ,10};
	int tem = 0;
	int i = 0;
	int sz = sizeof(arr1) / sizeof(arr1[0]);
	for (i = 0; i < sz; i++) {
		tem = arr1[i];
		arr1[i] = arr2[i];
		arr2[i] = tem;
	}
}

统计二进制中1的个数