Golang 001. 统计7的倍数或包含7的数字

package main
import "fmt"
func Contain7(number int) bool {
  result := false
  for i, j := 0, 1; i < 3; i++ { //100以内，只要循环3只
    if number/j%10 == 7 {
      result = true
      break
    }
    j *= 10
  }
  return result
}
func main() {
  number := 1
  count := 0
  for number <= 100 {
    if number%7 == 0 || Contain7(number) {
      fmt.Print(number)
      if count%5 == 4 {
        fmt.Println()
      } else {
        fmt.Print("\t")
      }
      count++
    }
    number++
  }
  fmt.Printf("\n满足条件的数共有%d个。", count)
}

package main
import (
  "fmt"
  "strconv"
  "strings"
)
func main() {
  number := 1
  count := 0
  for number <= 100 {
    if number%7 == 0 || strings.Contains(strconv.Itoa(number), "7") {
      fmt.Print(number)
      if count%5 == 4 {
        fmt.Println()
      } else {
        fmt.Print("\t")
      }
      count++
    }
    number++
  }
  fmt.Printf("\n满足条件的数共有%d个。", count)
}