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Solve LeetCode 3 Longest Substring Without Repeating Characters in C++ using the sliding window

Longest Substring Without Repeating Characters in C++ LeetCode 3 · sliding window · last index array Table of Contents Problem Statement Approach Algorithm C++ Program Input Sample Output Output Explanation Dry Run Flow of Execution Time Complexity Space Complexity Applications Key Points Interview Questions Frequently Asked Questions Conclusion Problem Statement 3. Longest Substring Without Repeating Characters Given a string s , find the length of the longest substring that contains no repeating characters. A substring is a continuous part of the string, so "pwke" is a subsequence of "pwwkew" but not a substring. Approach We use a sliding window . The window is the part of the string between start and end , and we always keep it free of repeated characters. An array lastIndex of size 128 remembers the most recent position of every ASCII ...
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C Program to Separate Even and Odd Numbers from an Array

🔢 C Program to Separate Even and Odd Numbers from an Array

#include<stdio.h>
int main()
{
    int num;
    printf("Enter the size of the array:\n");
    scanf("%d",&num);
    if(num<=0)
    {
        printf("!invalid array size:\n");
        return 1;
    }
    int a[num],even[num],odd[num];
    int evencount=0,oddcount=0;
    printf("Enter %d Elements in an array:\n",num);
    for(int i=0;i<num;i++)
    {
        scanf("%d",&a[i]);
        
        if(a[i]%2==0)
        {
            even[evencount++]=a[i];
        }
        else
        {
            odd[oddcount++]=a[i];
        }
    }
    printf("Even numbers are:\n");
    for(int i=0;i<evencount;i++)
    {
        printf("%d ",even[i]);
    }
    printf("\nOdd numbers are:");
    for(int i=0;i<oddcount;i++)
    {
        printf("%d ",odd[i]);
    }
}

📝 Explanation:

This C program reads n integers into an array and separates them into two arrays: one for even numbers and another for odd numbers. It then displays them separately.

💡 Sample Output:

Enter the size of the array:
6
Enter 6 Elements in an array:
1 2 3 4 5 6
Even numbers are:
2 4 6 
Odd numbers are:
1 3 5

🔍 Keywords:

even odd separation C program, split even and odd, C array even odd, separate numbers C, odd even logic in C

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