# Order table delete element with value x

Posted by GaryC on Wed, 01 Jan 2020 02:08:34 +0100

Train of thought:

Don't think about deleting words, think about how to save non-x values

Two solutions are provided here, which have the same way:

1. Count and save the non-x elements

2. Count the number of elements x, and save the non-x elements

matters needing attention:

Note that due to the use of reference (&), the code here can only be compiled in C + +

When using the pointer, be sure to open up space, or you may find unpredictable errors later

The code is as follows:

``` 1 #include <stdio.h>
2 #include <stdlib.h>
3 #define MaxSize 50
4 typedef int ElemType;
5
6 typedef struct {
7     ElemType data[MaxSize];
8     int length;
9 } Sqlist;
10
11 //Which will not be x Element statistics and save
12 void delnode1(Sqlist* &L, ElemType x) {
13     int k = 0, i;
14     for(i = 0; i < L -> length; i++) {
15         if(L -> data[i] != x) {
16             L -> data[k] = L -> data[i];
17             k++;
18         }
19     }
20     L -> length = k;
21 }
22
23 //Statistics for x The number of elements of the x Element save for
24 void delnode2(Sqlist* &L, ElemType x) {
25     int k = 0, i;
26     for (i = 0; i < L -> length; i++) {
27         if (L -> data[i] == x) {
28             k++;
29         } else {
30             L -> data[i - k] = L -> data[i];
31         }
32     }
33     L -> length -= k;
34 }
35
36 void createList(Sqlist* &L, ElemType a[], int n) {
37     int i;
38     L = (Sqlist *)malloc(sizeof(Sqlist));
39     for (i = 0; i < n; i++) {
40         L -> data[i] = a[i];
41     }
42     L -> length = n;
43 }
44
45 void dispList(Sqlist *L) {
46     int i;
47     for (i = 0; i < L -> length; i++) {
48         printf("%d ", L -> data[i]);
49     }
50     printf("\n");
51 }
52
53 int main(int argc, char const *argv[]) {
54     Sqlist *L;
55     ElemType a[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
56     createList(L, a, 10);
57     printf("Original linear table:\n");
58     dispList(L);
59     delnode1(L, 3);
60     printf("After deleting 3:\n");
61     dispList(L);
62     delnode2(L, 4);
63     printf("After deleting 4:\n");
64     dispList(L);
65     return 0;
66 }```
Tap the plus sign and the code will appear

Here's the result*^_^*

```Original linear table:
0 1 2 3 4 5 6 7 8 9
After deleting 3:
0 1 2 4 5 6 7 8 9
After deleting 4:
0 1 2 5 6 7 8 9```

Topics: C