How to find the Element with Minimum Number of Occurrences in a List in Dart - Step by Step Examples

How to find the Element with Minimum Number of Occurrences in a List in Dart ?

Answer

To find the element with the minimum number of occurrences in a list in Dart, you can use a Map to count the occurrences.

✐ Examples

1 Find Least Frequent Integer in List

In this example,

We create a list named data with several integer elements.
We declare a map to count the occurrences of each element.
We iterate through the list to populate the map with counts.
We find the element with the minimum count by iterating through the map.
Finally, we print the least common element to standard output.

Dart Program

void main() {
    List<int> data = [1, 2, 2, 3, 3, 3, 4];
    Map<int, int> count = {};
    for (var num in data) {
        if (count.containsKey(num)) {
            count[num] = count[num]! + 1;
        } else {
            count[num] = 1;
        }
    }
    int leastCommon = data[0];
    int minCount = data.length;
    count.forEach((key, value) {
        if (value < minCount) {
            minCount = value;
            leastCommon = key;
        }
    });
    print('Element with the minimum occurrences is: \$leastCommon');
}

Output

Element with the minimum occurrences is: 1

2 Find Least Frequent String in List

In this example,

We create a list named words with several string elements.
We declare a map to count the occurrences of each element.
We iterate through the list to populate the map with counts.
We find the element with the minimum count by iterating through the map.
Finally, we print the least common element to standard output.

Dart Program

void main() {
    List<String> words = ['apple', 'banana', 'apple', 'orange', 'banana', 'apple'];
    Map<String, int> count = {};
    for (var word in words) {
        if (count.containsKey(word)) {
            count[word] = count[word]! + 1;
        } else {
            count[word] = 1;
        }
    }
    String leastCommon = words[0];
    int minCount = words.length;
    count.forEach((key, value) {
        if (value < minCount) {
            minCount = value;
            leastCommon = key;
        }
    });
    print('Element with the minimum occurrences is: \$leastCommon');
}

Output

Element with the minimum occurrences is: orange

Summary

In this tutorial, we learned How to find the Element with Minimum Number of Occurrences in a List in Dart language with well detailed examples.

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How to find the Element with Minimum Number of Occurrences in a List in Dart - Step by Step Examples

How to find the Element with Minimum Number of Occurrences in a List in Dart ?

Answer

✐ Examples

1 Find Least Frequent Integer in List

Dart Program

Output

2 Find Least Frequent String in List

Dart Program

Output

Summary

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