Changed folder name from 20231201 to day01

20231201/trebuchet.go

@@ -1,132 +0,0 @@
-package main
-
-import (
-    "fmt"
-    "strings"
-    "bufio"
-    "os"
-    "strconv"
-)
-
-var numbers = []string {
-   "one", "two", "three", "four", "five",
-   "six", "seven", "eight", "nine",
-}
-
-// Panic if err
-func check(e error) {
-    if e != nil {
-        panic(e)
-    }
-}
-
-func ExtractCalibration(s string) string {
-
-	firstDigit := 0
-	lastDigit := 0
-	index := 0
-
-	// Start from the beginning of the string, stop when you find a number
-    for i := 0; i < len(s); i++ {
-       if num, err := strconv.Atoi(string(s[i])); err == nil {
-           firstDigit = num
-           index = i
-           break
-       }
-    }
-
-	// Start from the end of the string, stop when you find a number
-    for j := len(s) - 1; j >= index; j-- {
-       if num, err := strconv.Atoi(string(s[j])); err == nil {
-           lastDigit = num
-           break
-       }
-    }
-   
-    
-    return fmt.Sprint(firstDigit) + fmt.Sprint(lastDigit)
-}
-
-func SearchFirstIndex(s string) int {
-    // len(s) will always be bigger than the first index where you
-    // can have a substring match
-    index, number := len(s),0
-    // from 1 to 9, save the smallest index and the number
-    for i := 1; i < 10; i++ {
-        tempIndex := strings.Index(s, fmt.Sprint(i))
-        if tempIndex < index && tempIndex != -1 {
-            index = tempIndex
-            number = i
-        }
-
-    }
-    // again for strings, from [0] "one" to [8] "nine"
-    // save the smallest index, if smaller than the previous
-    for i := 0; i < 9; i++ {
-        tempIndex := strings.Index(s, numbers[i])
-        if tempIndex < index && tempIndex != -1 {
-            index = tempIndex
-            number = i + 1
-        }
-    }
-
-    return number
-}
-
-func SearchLastIndex(s string) int {
-    // -1 will always be smaller than the last index where you
-    // can have a substring match
-    index, number := -1,0
-    for i := 1; i < 10; i++ {
-        tempIndex := strings.LastIndex(s, fmt.Sprint(i))
-        if tempIndex > index && tempIndex != -1 {
-            index = tempIndex
-            number = i
-        }
-
-    }
-    for i := 0; i < 9; i++ {
-        tempIndex := strings.LastIndex(s, numbers[i])
-        if tempIndex > index && tempIndex != -1 {
-            index = tempIndex
-            number = i + 1
-        }
-    }
-
-    return number
-}
-
-func CombineIndexes(s string) int {
-    firstNumber := SearchFirstIndex(s)
-    secondNumber := SearchLastIndex(s)
-
-    combinedString := fmt.Sprint(firstNumber) + fmt.Sprint(secondNumber)
-
-    combinedNumber, err := strconv.Atoi(combinedString)
-    _ = err
-
-    return combinedNumber    
-}
-
-func main() {
-	file, err := os.Open("input")
-	check(err)
-	defer file.Close()
-
-	var firstTotal int = 0
-	var secondTotal int = 0
-
-	scanner := bufio.NewScanner(file)
-
-	for scanner.Scan() {
-    	line := scanner.Text()
-    	calibration := ExtractCalibration(line)
-    	num, err := strconv.Atoi(calibration)
-    	_ = err
-    	firstTotal += num
-    	secondTotal += CombineIndexes(line) 
-	}
-	fmt.Printf("Calibration value, first method: %d\n", firstTotal)
-	fmt.Printf("Calibration value, second method: %d\n", secondTotal) 
-	
-}