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package main

import (
	"fmt"
	"sort"
)

func GuessingGame() {
	var s string
	fmt.Println("Pick an integer from 0 to 100.")
	answer := sort.Search(100, func(i int) bool {
		fmt.Printf("Is your number <= %d? ", i)
		_, _ = fmt.Scanf("%s", &s)
		return s != "" && s[0] == 'y'
	})
	fmt.Printf("Your number is %d.\n", answer)
}

func main() {
	s := []int{1, 2, 3, 4, 5, 6}
	pos := sort.Search(len(s), func(i int) bool {
		return s[i] >= 3
	})
	fmt.Println(pos)

	GuessingGame()
}