Skip to main content

Featured

C Program to Solve Two Sum Using Brute Force (With Algorithm & Output)

 Introduction The Two Sum problem is a popular coding interview question where we must find two indices of an array whose values add up to a given target. This program demonstrates a simple brute-force solution in C using nested loops and dynamic memory allocation. Problem Statement Given an integer array and a target value, return the indices of the two numbers such that they add up to the target. Each input has exactly one solution, and the same element cannot be used twice. The result should return the indices, not the values. If no solution exists, return NULL.  Algorithm / Logic Explanation Start the program. Traverse the array using a loop from index 0 to numsSize - 1 . Inside this loop, use another loop starting from i + 1 to numsSize - 1 . For every pair (i, j) , check if nums[i] + nums[j] == target . If condition becomes true: Allocate memory for 2 integers using malloc() . Store indices i and j . Set returnSize = 2 . Return the result poi...
Post a Comment
Read more
Labels

C Pattern Program: Diagonal Number Pattern

C Pattern Program: Diagonal Number Pattern

🔷 C Pattern Program: Diagonal Number Pattern

#include <stdio.h>

int main()
{
    int num;
    printf("Enter the number:\n");
    scanf("%d", &num);
    
    for (int i = 0; i < num; i++)
    {
        for (int j = 0; j < num; j++)
        {
            if (j == i)
                printf("%d", i + 1);
            else if (j == num - 1 - i)
                printf("%d", num - i);
            else
                printf(" ");
        }
        printf("\n");
    }

    return 0;
}

📘 Explanation:

This C program prints a square pattern with two diagonal lines:

🔹 On the **main diagonal** (from top-left to bottom-right), it prints i+1 (increasing number).
🔹 On the **anti-diagonal** (from top-right to bottom-left), it prints num - i (decreasing number).
🔹 All other positions are filled with spaces to maintain the structure.
🔹 The result is a visually symmetric pattern based on the input size.

🔍 Sample Output:

Enter the number:
5
1   5
 2 4 
  3  
 2 4 
1   5

🏷️ Keywords:

C pattern printing, diagonal number pattern, matrix pattern in C, double diagonal number pattern, C loop-based programs

Labels:

Comments

Post a Comment

Popular Posts

🌙