SDguy
BAN USER
- 13
-2of 4 votes
Answersfind a pattern in byte array and change that pattern in place (do not use temp array or variable)
for example, find pattern 0,0,3 in an byte array and replace it with 0,0
should be o(n)
my solutions :
- SDguy in United StatesByte*remPattern003(byte arr[] , int &size) //size is input and output variable ///outputs size of output array { int k = 0; for(int i=0;i<size;) { if(arr[i] == 0 && arr[i+1] == 0 && arr[i+2] == 3) { arr[k++]=arr[i]; arr[k++]=arr[i+1]; arr[k]=arr[i+3]; i+=3; } else arr[k++]=arr[i++]; } size= k; return arr; }| Report Duplicate | Flag | PURGE
Microsoft Software Engineer in Test Arrays
// returns index of the first matching char if sub string is found otherwise returns -1
int mystrstr(char *source , char*substr)
{
int i = 0, j = 0;
while (source[i] && substr[j])
{
if(source[i]==substr[j])
{
i++;
j++;
if(!substr[j])
return (i-j);
}
else
{
i=i-j+1;
j=0;
}
}
return -1;
}
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// some C/C++ style pseudo code
- SDguy May 14, 2013// needs some validations such as check for invalid pointers and etc..
{{
node* reverse_linked_list( node * head)
{
if (head== NULL || head->next==NULL)
{
return head;
}
node *new_head = reverse_linked_list(head->next);
head->next->next = head;
head->next = NULL;
return new_head;
}
Node * MiddleOfList(Node *head)
{
node * middle ;
node * temp = head;
while(temp ->next!=NULL)
{
temp =temp ->next->next
middle = middle->next
}
return middle;
}
BOOL palindrome (Node *head)
{
Node *middle = MiddleOfList(head) ;
head = reverse_linked_list(middle)
while (middle ->next != NULL)
{
if (middle->data == head->data )
continue;
else return false ;
}
return true
}
}}