Palindrome in Range in C, C++, Java & Python – Code with Explanation & Examples in Short and Simple

   

C Program

/* C - Palindrome Numbers in a Range */
#include <stdio.h>
int main(){
    int start, end;
    scanf("%d%d", &start, &end);
    for(int n=start; n<=end; n++){
        int rev=0, temp=n;
        while(temp>0){
            rev = rev*10 + temp%10;
            temp /= 10;
        }
        if(rev==n) printf("%d ", n);
    }
    return 0;
}

C Output

Input:  
10 100

Output:  
11 22 33 44 55 66 77 88 99

C++ Program

// C++ - Palindrome Numbers in a Range
#include <bits/stdc++.h>
using namespace std;
int main(){
    int start, end;
    cin >> start >> end;
    for(int n=start; n<=end; n++){
        int rev=0, temp=n;
        while(temp>0){
            rev = rev*10 + temp%10;
            temp /= 10;
        }
        if(rev==n) cout << n << " ";
    }
}

C++ Output

Input:  
1 50

Output:  
1 2 3 4 5 6 7 8 9 11 22 33 44

JAVA Program

// Java - Palindrome Numbers in a Range
import java.util.*;
class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int start = sc.nextInt(), end = sc.nextInt();
    for(int n=start; n<=end; n++){
      int rev=0, temp=n;
      while(temp>0){
        rev = rev*10 + temp%10;
        temp /= 10;
      }
      if(rev==n) System.out.print(n + " ");
    }
  }
}

JAVA Output

Input:  
50 150  

Output:  
55 66 77 88 99 101 111 121 131 141

Python Program

# Python - Palindrome Numbers in a Range
start, end = map(int, input().split())
for n in range(start, end+1):
    if str(n) == str(n)[::-1]:
        print(n, end=" ")

Python Output

Input:  
200 250 

Output:  
202 212 222 232 242

In-Depth Learning – Entire Concept in Paragraphs

Example

For input 10 100, the program prints 11 22 33 44 55 66 77 88 99 since every one of them is a palindromic number when read forwards and backwards. The program simply reverses every number and verifies whether the reversed figure is the same as the original.

Real-Life Analogy

Consider a palindrome number as a mirror-image, perfectly symmetrical butterfly — if you fold the butterfly in half along the middle, both halves are identical. No matter if you read the digits left to right or right to left, they stay the same, similar to a mirror reflection. 

Why It Matters

Palindromes are also extensively utilized in pattern detection, computer security, and even DNA sequence identification. In programming, they help you have fun while exercising loops, conditionals, string operation, and number reversal methods. Finding palindromes in a range increases complexity, showing you how to loop through sets of numbers most efficiently.

Learning Insights

This problem reinforces nested logic — a loop to traverse the range and an inner process to check if a number is a palindrome. It’s a good introduction to digit manipulation, especially if you’re not relying on converting numbers to strings. It also teaches careful handling of loop boundaries, ensuring all numbers in the given range are considered.

Interview Relevance and Practical Use

Palindrome problems are favorites with interviewers since they challenge basic abilities such as arithmetic, looping, and condition checking. Converting this to a range tests your skill in writing efficient and readable code. In practical applications, the same kind of logic is applied in searching for symmetrical strings in text, checking serial numbers, and finding palindromic sequences in biological data.

Performance and Edge Notes

Time complexity is O(n × d), n being the count of values in the range and d being the count of digits per number. Space complexity is O(1) in case of numeric reversal and O(d) in case of string conversion. Optimization for large ranges can be to generate palindromes directly rather than checking every number.

SEO-friendly summary

This palindrome range program in C, C++, Java, and Python effectively prints every number reading the same both forward and backward between two specified boundaries. It's a great practice exercise to master loops, conditionals, and digit manipulation as well as confirm range-based iteration. Palindrome logic finds application in algorithms, pattern recognition, and interview prep, so this code is great to have around for beginners and competitive programmers.