C/C++ Coding Exercise – Tiny Echo Program
The echo always responses the same text as input until you terminates it by Ctrl+C or Ctrl+Z (End of Line). This is more useful than “Hello, World” in the …
How to Obtain the Second Distinct Highest Record using SQL?
Question: Write a SQL query to get the second highest salary (distinct) from the Employee table. +----+--------+ | Id | Salary | +----+--------+ | 1 | 100 | | …
How to Use Array in Windows Batch Programming?
January 13, 2015
batch script, programming languages, tricks, windows, windows command shell
2 Comments
Can you use arrays in the simple windows batch programming? The answer is yes, but we have to use some tricks to emulate the arrays. @echo off :: helloacm.com …
Excel Sheet Column Number and Title Conversion in C++
Excel Column to Number Given a column title as appear in an Excel sheet, return its corresponding column number. For example: A - 1 B - 2 C - …
Compute the Number of Trailing Zeros for a Factorial in C++
Given an integer n, return the number of trailing zeroes in Factorial N! Your solution should be in logarithmic time complexity. Naive/Bruteforce Solution It is easy to get the …
Restart Apache Web Server On Errors
My VPS is running at Ubuntu Linux. The Apache2 Server is serving 6 websites. If, on errors (e.g. out-of-memory), the websites are down until the apache2 server is restarted …