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Reverse Array
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| package main | |
| import ( | |
| "bufio" | |
| "fmt" | |
| "io" | |
| "os" | |
| "strconv" | |
| "strings" | |
| ) | |
| /* | |
| * Complete the 'reverseArray' function below. | |
| * | |
| * The function is expected to return an INTEGER_ARRAY. | |
| * The function accepts INTEGER_ARRAY a as parameter. | |
| */ | |
| func reverseArray(a []int32) (data []int32) { | |
| // Write your code here | |
| p := 0 | |
| for i := len(a) -1; i >=0 ; i-- { | |
| data = append(data, a[i]) | |
| p++ | |
| } | |
| return data | |
| } | |
| func main() { | |
| reader := bufio.NewReaderSize(os.Stdin, 16 * 1024 * 1024) | |
| stdout, err := os.Create(os.Getenv("OUTPUT_PATH")) | |
| checkError(err) | |
| defer stdout.Close() | |
| writer := bufio.NewWriterSize(stdout, 16 * 1024 * 1024) | |
| arrCount, err := strconv.ParseInt(strings.TrimSpace(readLine(reader)), 10, 64) | |
| checkError(err) | |
| arrTemp := strings.Split(strings.TrimSpace(readLine(reader)), " ") | |
| var arr []int32 | |
| for i := 0; i < int(arrCount); i++ { | |
| arrItemTemp, err := strconv.ParseInt(arrTemp[i], 10, 64) | |
| checkError(err) | |
| arrItem := int32(arrItemTemp) | |
| arr = append(arr, arrItem) | |
| } | |
| res := reverseArray(arr) | |
| for i, resItem := range res { | |
| fmt.Fprintf(writer, "%d", resItem) | |
| if i != len(res) - 1 { | |
| fmt.Fprintf(writer, " ") | |
| } | |
| } | |
| fmt.Fprintf(writer, "\n") | |
| writer.Flush() | |
| } | |
| func readLine(reader *bufio.Reader) string { | |
| str, _, err := reader.ReadLine() | |
| if err == io.EOF { | |
| return "" | |
| } | |
| return strings.TrimRight(string(str), "\r\n") | |
| } | |
| func checkError(err error) { | |
| if err != nil { | |
| panic(err) | |
| } | |
| } |
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