R Program to merge two given lists into one list

February 26, 2023, Learn eTutorial
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How to merge two given lists into one list?

Here we are explaining how to write an R program to combine two given lists into one list by using a built-in combine function c(). This function helps to combine its arguments to form a list, where all the arguments are related to a common type and the type of the return value, The syntax of this function is

``````c(…) # Where ... indicates object to be concatenate
```
```

How to implement the merge algorithm in the R program

In this R program, we directly give the values to a built-in function `c()`. Here we are using variables lst1 and lst2 for holding the list elements of two different types. Call the function `c()` for merging the two lists and assigning them to a list variable merge_lst.

ALGORITHM

STEP 1: Assign variables lst1,lst2  with a list of two different types

STEP 2: Print the original lists

STEP 3: Merge the two lists by calling the combine function as `c(lst1,lst2)`

STEP 4: Assign merged lists into the variable merge_lst

STEP 5: Print the merged list merge_lst

R Source Code

```                                          ```lst1 = list(5,2,1)
lst2 = list("Red", "Green", "Black")
print("Original lists:")
print(lst1)
print(lst2)
print("Merge the lists:")
merge_lst =  c(lst1, lst2)
print("New merged list:")
print(merge_lst)```
```

OUTPUT

```[1] "Original lists:"
[[1]]
[1] 5

[[2]]
[1] 2

[[3]]
[1] 1

[[1]]
[1] "Red"

[[2]]
[1] "Green"

[[3]]
[1] "Black"

[1] "Merge the lists:"
[1] "New merged list:"
[[1]]
[1] 5

[[2]]
[1] 2

[[3]]
[1] 1

[[4]]
[1] "Red"

[[5]]
[1] "Green"

[[6]]
[1] "Black"          ```

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