replace an element in a specific array with another value in C#

Question

There is one array for me. my array is as follows.

var Array = [["Dog","0","A","eat"],["cat","1","B","eat"]]

I want to replace the value in some indexes in this array with other values.

for example, it should be like this.

var newArray = [["Dog","big","house","eat"],["cat","small","forest","eat"]]

can be understood from the example, "0 = big, 1 = small" and "A=house, B=forest"

how can I solve this both with the for loop and using C# Linq.

Try it. If you have problems then show where your at. Then we help. — Ralf
– Ralf, Commented Dec 1, 2022 at 9:33
I actually tried to go into it with the for loop and equalize the if conditions. but I would like to see more elegant and readable codes. — Berkay Kulak
– Berkay Kulak, Commented Dec 1, 2022 at 9:38

Jostein S · Accepted Answer · 2022-12-01 10:37:32Z

2

Unsure if it qualifies as elegant but what you're describing is a matter of translation, a Dictionary is very good for this.

Loop through each string in each array and replace if the translation dictionary contains a key equal to the string.

var Array = new string[][] {
    new string[] {"Dog", "0", "A", "eat" },
    new string[] {"Cat", "1", "B", "eat" }
};
//Array: [["Dog","0","A","eat"],["Cat","1","B","eat"]]

var TranslationDict = new Dictionary<string, string>() {
    { "0", "big" },
    { "1", "small" },
    { "A", "house" },
    { "B", "forest" },
};

for (int y = 0; y < Array.Length; y++) {
    for (int x = 0; x < Array[y].Length; x++) {
        if(TranslationDict.ContainsKey(Array[y][x])) {
            Array[y][x] = TranslationDict[Array[y][x]];
        }
    }
}

//Array: [["Dog","big","house","eat"],["Cat","small","forest","eat"]]

answered Dec 1, 2022 at 10:37

Jostein S

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1 Comment

Astrid E. Over a year ago

I like the use of the dictionary. You could alternatively use .TryGetValue() in the if, so that you don't need to do the lookup twice.

Hannes Füreder · Accepted Answer · 2022-12-01 11:40:51Z

1

Do it with linq like that:

var testArray = array.
Select(x => x.
Select(y => y.Replace("0", "big").Replace("1","test")).ToArray())
.ToArray();

edited Dec 1, 2022 at 11:40

answered Dec 1, 2022 at 11:15

Hannes Füreder

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