To convert an integer number to a decimal in Kotlin, you can simply use the ".toDouble()" function. This function converts the integer number to a decimal number with a double data type. Here is an example:

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val integerNumber = 5 val decimalNumber = integerNumber.toDouble() println(decimalNumber) |

In this example, the integer number 5 is converted to a decimal number 5.0 using the "toDouble()" function. You can then use the decimalNumber variable for further calculations or display it as needed.

## What is the disadvantage of using decimals over integers in Kotlin?

One disadvantage of using decimals over integers in Kotlin is that decimals are generally less efficient in terms of memory usage and computation speed compared to integers. Decimals require more memory storage and may take longer to perform mathematical operations, which can impact the performance of your program, especially when dealing with large datasets or complex calculations. Additionally, working with decimals can sometimes introduce rounding errors or issues with precision that may affect the accuracy of your calculations.

## How to convert an integer array to a decimal array in Kotlin?

To convert an integer array to a decimal array in Kotlin, you can simply loop through each element in the integer array and convert it to a decimal number by adding .0 to the end of each element. Here is an example code snippet to demonstrate this:

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fun main() { val intArray = arrayOf(1, 2, 3, 4, 5) val decimalArray = intArray.map { it.toDouble() } decimalArray.forEach { println(it) } } |

In this code snippet, we first define an integer array called `intArray`

with some sample integer values. We then use the `map`

function to transform each element of the `intArray`

into a decimal number by calling the `toDouble()`

method on each element. Finally, we print out each element of the resulting `decimalArray`

to verify that the conversion was successful.

You can run this code in a Kotlin environment (e.g. IntelliJ IDEA, Eclipse with Kotlin plugin, or online Kotlin compiler) to see the output of the decimal array.

## How to convert a string to integer in Kotlin?

You can convert a string to an integer in Kotlin using the `toInt()`

function. Here is an example:

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fun main() { val str = "123" val num = str.toInt() println(num) } |

In the above example, the `str.toInt()`

function converts the string "123" to an integer value 123.

## How to convert a map of integers to a map of decimals in Kotlin?

To convert a map of integers to a map of decimals in Kotlin, you can use the mapValues() function along with the toBigDecimal() function to convert each value in the map to a BigDecimal type.

Here is an example code snippet to demonstrate this conversion:

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import java.math.BigDecimal fun main() { val intMap = mapOf("key1" to 10, "key2" to 20, "key3" to 30) val decimalMap = intMap.mapValues { BigDecimal(it.value) } println(decimalMap) } |

In this code snippet, we have a map of integers called `intMap`

with keys and integer values. We then use the mapValues() function to convert each value in the map to a BigDecimal type using the toBigDecimal() function. The resulting map is stored in the `decimalMap`

variable.

When you run this code, you will see that the integer values in the `intMap`

have been converted to BigDecimal values in the `decimalMap`

.