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count_swaps.go
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/
count_swaps.go
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package main
import (
"bufio"
"fmt"
"os"
)
func countSwaps(arr []int) {
var i, j int
n := len(arr)
var numSwaps int
for i = 0; i < n; i++ {
for j = 0; j < n-1; j++ {
if arr[j] > arr[j+1] {
arr[j], arr[j+1] = arr[j+1], arr[j]
numSwaps++
}
}
}
fmt.Printf("Array is sorted in %d swaps.\n", numSwaps)
fmt.Println("First Element:", arr[0])
fmt.Println("Last Element:", arr[n-1])
}
func main() {
stdin, err := os.Open(os.Getenv("INPUT_PATH"))
if err != nil {
stdin = os.Stdin
}
defer stdin.Close()
reader := bufio.NewReaderSize(stdin, 1024*1024)
var n int
_, err = fmt.Fscan(reader, &n)
checkError(err)
arr := make([]int, n)
for i := 0; i < n; i++ {
_, err = fmt.Fscan(reader, &arr[i])
checkError(err)
}
countSwaps(arr)
}
func checkError(err error) {
if err != nil {
panic(err)
}
}