Java新手求助：将流程图转换为程序输入逻辑及疑问解答

Hey there! Let's turn that flowchart logic you've outlined into working Java code—since you already know the basics, this should feel straightforward once we connect each step to actual syntax.

First, let's recap the core logic you shared to make sure we're aligned:

• Get a numeric input from the user (we'll call this line)
• Initialize cnt1 (your original cnt) to 1
• Check if cnt1 <= line—if yes, proceed to initialize cnt2 to 1
• (I’ll assume there’s an inner loop for cnt2 since you mentioned it, but we can tweak this if your flowchart has more specific steps!)

Step-by-Step Java Implementation #

Here's a complete example that follows your flow, with comments linking each part to your original logic:

import java.util.Scanner;

public class FlowchartToCode {
    public static void main(String[] args) {
        // 1. Get user input (numeric value for `line`)
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter a numeric value for line: ");
        int line = scanner.nextInt();
        scanner.close();

        // 2. Initialize cnt1 (your original `cnt`) to 1
        int cnt1 = 1;

        // 3. Check if cnt1 <= line (outer loop condition)
        while (cnt1 <= line) {
            // 4. Initialize cnt2 to 1 as per your flowchart
            int cnt2 = 1;

            // Example inner logic for cnt2 (adjust this to match your full flowchart!)
            // For demo, we'll print a simple pattern using cnt1 and cnt2
            while (cnt2 <= cnt1) {
                System.out.print("* ");
                cnt2++; // Increment cnt2 (you'll likely need this for your flowchart)
            }

            System.out.println();
            cnt1++; // Don't forget to increment cnt1 to avoid infinite loops!
        }
    }
}

Key Explanations #

• User Input: We use Scanner to read the integer value for line—this is the standard way to get basic console input in Java.
• Loop Structure: The outer while loop directly implements your cnt1 <= line check. If you prefer for loops (often cleaner for counted iterations), you could rewrite the outer loop like this:

  for (int cnt1 = 1; cnt1 <= line; cnt1++) {
      int cnt2 = 1;
      // Inner logic here
  }
  

• Variable Naming: I used cnt1 instead of just cnt to match your clarification that it's "count 1"—this makes the code more readable, which is super important as you learn!
• Avoiding Infinite Loops: Always remember to increment your counter variables (cnt1++ and cnt2++ in the example) otherwise your loops will run forever.

If your flowchart has more steps after initializing cnt2 (like another condition or action), just expand the inner logic to match those requirements!

内容的提问来源于stack exchange，提问作者Mfahd