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Operations on Arrays. Operation on Array Data Structures  Traversal  Selection  Searching  Insertion  Deletion  Sorting.

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Presentation on theme: "Operations on Arrays. Operation on Array Data Structures  Traversal  Selection  Searching  Insertion  Deletion  Sorting."— Presentation transcript:

1 Operations on Arrays

2 Operation on Array Data Structures  Traversal  Selection  Searching  Insertion  Deletion  Sorting

3 Traversal Traversal is an operation in which each element of a list, stored in an array, is visited. The travel proceeds from the zero th element to the last element of the list.

4 WAP that travels on list and determine no of elements are 0 #include void main() { int list[10]; int n; Int i, neg=0, zero=0, pos=0; printf(“\n enter the size of the list\n”); scanf(“%d”,&n); printf(“Enter the elements one by one”); for(i=0;i

5 Selection An array allows selection of an element for given index. Array is called as random access data structure.

6 #include void main() { float merit[10]; int size,i,pos,choice; float percentage; printf(“\n Enter the size of the list”); scanf(“%d”, &size); printf(“\n Enter the merit list one by one”); for(i=0; i < size; i++) { printf(“\n Enter Data:”); scanf(“%f”, &merit[i]); } do { clrscr(); printf(“\n menu”); printf(“\n Querry…….1”); printf(“\n Quit…………2”); printf(“\n Enter your choice”); scanf(“%d”,&choice); switch(choice) { case 1: printf(“\n Enter position”); scanf(“%d”, &pos); percentage=merit[pos]; printf(“\n percentage=%4.2f”, percentage); break; case 2: printf(“\n Quitting”); } printf(“”\n press a key to continue…:); getch(); } while(choice!=2); }

7 Searching Search is an operation in which a given list is searched for a particular value. A list can be searched sequentially wherein the search for the data item starts from the beginning and continues till the end of the list. This method is called linear Search.

8 #include void main() { int numlist[20]; int n,pos, val,i; printf(“\n enter the size of the list”); scanf(“%d”, &n); printf(“\n Enter the elements one by one”); for(i=0;i

9 DELETION Deletion is the operation that removes an element from a given location of the list. To delete an element from the ith location of the list, then all elements from the right of i+ 1th location have to be shifted one step towards left to preserve contiguous locations in the array.

10 #include int main() { int array[100], position, i, n; printf("Enter number of elements in array\n"); scanf("%d", &n); printf("Enter %d elements\n", n); for ( i = 0 ; i< n ; i++ ) scanf("%d", &array[i]); printf("Enter the location where you wish to delete element\n"); scanf("%d", &position); if ( position >= n+1 ) printf("Deletion not possible.\n"); else { for ( i= position - 1 ; i < n - 1 ; i++ ) Array[i] = array[i+1]; printf("Resultant array is\n"); for( i = 0 ; i < n - 1 ; i++ ) printf("%d\n", array[i]); } return 0; }

11 INSERTION Insertion is the operation that inserts an element at a given location of the list. To insert an element at i th location of the list, then all elements from the right of i+ 1 th location have to be shifted one step towards right.

12 #include int main() { int array[100], position, i, n, value; printf("Enter number of elements in array\n"); scanf("%d", &n); printf("Enter %d elements\n", n); for (i = 0; i < n; i++) scanf("%d", &array[i]); printf("Enter the location where you wish to insert an element\n"); scanf("%d", &position); printf("Enter the value to insert\n"); scanf("%d", &value); for (i = n - 1; i >= position - 1; i--) Array[i+1] = array[i]; array[position-1] = value; printf("Resultant array is\n"); for (i = 0; i <= n; i++) printf("%d\n", array[i]); return 0; }

13 SORTING

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