如何将元素插入到字符串数组中 [英] How to insert elements into string array

问题描述

我需要在数组中插入元素。



例如



s [0] = Ram

s [1] =Ravi

s [2] =詹姆斯

s [3] =雅各布

s [4] =Abdul





这里我想在詹姆斯之前插入一个新的字符串。 />


用户输入应该是James。



自动应该在James之前插入。

I need to insert element in an array.

For example

s[0]="Ram"
s[1]="Ravi"
s[2]="James"
s[3]="Jacob"
s[4]="Abdul"


Here I want to insert a new string before James.

The User Input should be James.

Automatically it should be inserted before James.

推荐答案

首先获取James的索引，在该位置添加元素并将所有其他索引增加1.

First get the index of "James", add element at that position and increment all other indexes by 1.

string[] Add(string[] array, string newValue){
    int newLength = array.Length + 1;

    string[] result = new string[newLength];

    result[newLength -1] = newValue;

    return result;
}

string[] RemoveAt(string[] array, int index){
    int newLength = array.Length - 1;

    if(newLength < 1)
    {
        return array;//probably want to do some better logic for removing the last element
    }

    //this would also be a good time to check for "index out of bounds" and throw an exception or handle some other way

    string[] result = new string[newLength];
    int newCounter = 0;
    for(int i = 0; i < array.Length; i++)
    {
        if(i == index)//it is assumed at this point i will match index once only
        {
            continue;
        }
        result[newCounter] = array[i];
        newCounter++;
    }

    result result;
}

参考： stackoverflow [ ^ ]



-KR

reference : stackoverflow[^]

-KR

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