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Insertion Sort

Insertion sort is like sorting playing cards in your hands. You split the cards into two groups: the sorted cards and the unsorted cards. Then, you pick a card from the unsorted group and put it in the right place in the sorted group.




Custom Input

Array Size

Speed

Algorithm Visualization
10 5 77 3 14 9 190 7




Complexity

Worst Case O( n2 )
Average Case O( n2 )
Best Case O( n )
void insertionSort(int arr[], int n) {
    int i, key, j;
    for (i = 1; i < n; i++) {
        key = arr[i];
        j = i - 1;
        while (j >= 0 && arr[j] > key) {
            arr[j + 1] = arr[j];
            j = j - 1;
        }
        arr[j + 1] = key;
    }
}

void printArr(int arr[], int n) {
    for (int i = 0; i < n; i++) {
        printf("%d ", arr[i]);
    }
    printf("\n");
}

int main() {
    int n;
    printf("Enter number of elements: ");
    scanf("%d", &n);
    
    int arr[n];
    printf("Enter %d integers:\n", n);
    for (int i = 0; i < n; i++) {
        scanf("%d", &arr[i]);
    }
    
    insertionSort(arr, n);
    
    printf("Sorted array: \n");
    printArr(arr, n);
    
    return 0;
}
            
    
public class SelectionSort {
    void sort(int arr[]) {
        int n = arr.length;
        for (int i = 0; i < n-1; i++) {
            int min_idx = i;
            for (int j = i+1; j < n; j++)
                if (arr[j] < arr[min_idx])
                    min_idx = j;
            int temp = arr[min_idx];
            arr[min_idx] = arr[i];
            arr[i] = temp;
        }
    }
    void printArray(int arr[]) {
        int n = arr.length;
        for (int i=0; i < n; ++i)
            System.out.print(arr[i]+" ");
        System.out.println();
    }
    public static void main(String args[]) {
        SelectionSort ob = new SelectionSort();
        int arr[] = {64, 25, 12, 22, 11};
        ob.sort(arr);
        System.out.println("Sorted array");
        ob.printArray(arr);
    }
}
    
def selection_sort(arr):
    n = len(arr)
    for i in range(n - 1):
        min_idx = i
        for j in range(i + 1, n):
            if arr[min_idx] > arr[j]:
                min_idx = j
        arr[i], arr[min_idx] = arr[min_idx], arr[i]

def print_array(arr):
    for num in arr:
        print(num, end=" ")
    print()

if __name__ == "__main__":
    arr = list(map(int, input().split()))
    selection_sort(arr)
    print_array(arr)