165. Compare Version Numbers

本文介绍了一种用于比较软件版本号的算法实现。通过将版本号字符串拆分为数组,并逐位比较数字大小,实现了准确判断两个版本号之间的大小关系。此算法适用于需要进行版本更新检查的应用场景。

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class Solution {
    public int compareVersion(String version1, String version2) {
        String[] v1=version1.split("\\.");
        String[] v2=version2.split("\\.");
        
        int i=0;
        while(i<v1.length||i<v2.length)
        {
            int n1=0;
            if(i<v1.length)
                n1=Integer.parseInt(v1[i]);
            
            int n2=0;
            if(i<v2.length)
                n2=Integer.parseInt(v2[i]);
            
            if(n1>n2)
                return 1;
            else if(n1<n2)
                return -1;
            else
                i++;
        }
        return 0;
    }
}

  

转载于:https://www.cnblogs.com/asuran/p/7721696.html

### Goroutines and Channel Output Comparison In the context of concurrent programming using Go language, goroutines provide an efficient way to execute functions concurrently. By prefixing a function call with `go`, this operation runs asynchronously in a separate goroutine without blocking the main program flow[^1]. When comparing outputs related to channels (`ch1`), consider how data flows between different parts of a program through these communication primitives. Channels allow safe sharing of values across multiple goroutines. #### Example Demonstrating Concurrent Execution Using Goroutines Below demonstrates sending messages over channel `ch1`. One version uses direct synchronous calls while another employs asynchronous execution via goroutines: ```go package main import ( "fmt" ) func sendDirect(ch chan int) { for i := 0; i < 5; i++ { ch <- i * 2 // Send even numbers directly into ch1 synchronously } close(ch) } func sendAsync(ch chan int) { go func() { // Run as goroutine for i := 0; i < 5; i++ { ch <- i * 3 // Send multiples of three into ch1 asynchronously } close(ch) }() } func main() { fmt.Println("Synchronous:") directCh := make(chan int) sendDirect(directCh) for v := range directCh { fmt.Printf("%d ", v) } fmt.Println("\nAsynchronous:") asyncCh := make(chan int) sendAsync(asyncCh) for v := range asyncCh { fmt.Printf("%d ", v) } } ``` This code snippet shows two methods for populating `ch1`: one performs operations sequentially within the same thread, whereas the other leverages concurrency by launching tasks inside independent lightweight threads known as goroutines.
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