day03/engine-schema.go

@@ -19,82 +19,39 @@ func PrintAndWait(x ...any) {
     fmt.Print(x)
     fmt.Scanln() 
 }
+// ScanTwoLines takes `lines` and `index` to scan lines[index]
+// and lines[index + 1]
+func ScanTwoLines(lines []string, index int, numbers [][]int,  totalSum *int) {
     
-func MatchNumbers(lines []string, index int, ast []int, total *int) {
-   	// Regex that finds the numbers in a row
 	renum := regexp.MustCompile("[0-9]+")
-    // Gather numbers in prev line
+	resym := regexp.MustCompile("[^0-9.]+")
-    prevLine := renum.FindAllStringIndex(lines[index-1], -1)
+	firstLineNums 			:= renum.FindAllStringIndex(lines[index], -1)
-    // Gather numbers in this line
+	firstLineSymbolsIndex 	:= resym.FindAllStringIndex(lines[index], -1)
-    thisLine := renum.FindAllStringIndex(lines[index], -1) 
+	secondLineSymbolsIndex 	:= resym.FindAllStringIndex(lines[index + 1], -1)
-    // Gather numbers in next line
-    nextLine := renum.FindAllStringIndex(lines[index+1], -1)
-    // Calculate the number of numbers in three lines
-    totalNumbers := len(prevLine) + len(thisLine) + len(nextLine)
-
-	// Now we create a big array with all the indexes
-	allIndexes := prevLine
-	for i := range thisLine {
-    	allIndexes = append(allIndexes, thisLine[i])
-	}
-	for i := range nextLine {
-    	allIndexes = append(allIndexes, nextLine[i]) 
-	}
-
-	// Now we create a big array with all the numbers
-	// We start from the previous line
-	allNumbers := renum.FindAllString(lines[index-1], -1)
-    thisNums := renum.FindAllString(lines[index], -1)
-    for i := range thisNums {
-        allNumbers = append(allNumbers, thisNums[i]) 
-    }
-    nextNums := renum.FindAllString(lines[index+1], -1)
-    for i := range nextNums {
-        allNumbers = append(allNumbers, nextNums[i]) 
-    }
-	// When we start, we have zero matches
-    matches := 0
-    // We will stop when we encounter two numbers
-    twoNums := [2]int{0, 0}
-    _ = twoNums
-    // Cycling through all numbers, but stopping at two matches
-    for i := 0; i < totalNumbers && matches < 2; i++ {
-        if (ast[0] >= allIndexes[i][0] - 1 && ast[0] <= allIndexes[i][1]) {
-            matches += 1
-            num, _ := strconv.Atoi(allNumbers[i])
-            twoNums[matches - 1] = num
-        }
-    }
-    if(matches == 2) {
-        tempGears := twoNums[0] * twoNums[1]
-        *total += tempGears
-    }
-}
-
-func CheckGears(lines []string) {
- 	total := 0
- 	totalPoint := &total
-   	// Regex that finds the numbers in a row
-	//renum := regexp.MustCompile("[0-9]+")
-	// Regex that finds the asterisks in a row
-	resym := regexp.MustCompile("[*]")
-	// For every line starting from the second
-	for i := 0; i < len(lines) - 1; i++ {
-    	// Take the index of the asterisks
-    	asteriskIndex := resym.FindAllStringIndex(lines[i], - 1)
-    	// For every index we get
-    	for j := range asteriskIndex {
-			MatchNumbers(lines, i, asteriskIndex[j], totalPoint) 
-    	}    	
-	}	
-	// firstLineNums 			:= renum.FindAllStringIndex(lines[index], -1)
-	// firstLineSymbolsIndex 	:= resym.FindAllStringIndex(lines[index], -1)
-	// secondLineSymbolsIndex 	:= resym.FindAllStringIndex(lines[index + 1], -1)
 	// For every *number index range*, check if in the same line there is a
 	// symbol on (first - 1) or (last + 1), check in other lines if there is
 	// a symbol in a specific interval of numbers. If you find a match, you
 	// can break as you just need one symbol
-	fmt.Printf("Total of gears is: %d\n", total) 
+	for i := range firstLineNums {
+    	for j := range firstLineSymbolsIndex {
+			if firstLineSymbolsIndex[j][index] >= firstLineNums[i][index] - 1 &&
+			   (firstLineSymbolsIndex[j][index] <= firstLineNums[i][index + 1]) {
+    			   *totalSum += numbers[index][i]
+    			   break
+			   }
+    	}
+    	for j := range secondLineSymbolsIndex {
+			if (secondLineSymbolsIndex[j][index] >= firstLineNums[i][index] - 1)  &&
+			   (secondLineSymbolsIndex[j][index] <= firstLineNums[i][index + 1]) {
+    			   *totalSum += numbers[index][i]
+    			   break
+			   }
+    	}
+	}
+}
+
+func ScanThreeLines() {
+    
 }
 
 func main() {
@@ -216,5 +173,4 @@ OuterLoop:
     	}
 	}
 	fmt.Printf("The total sum is: %d\n", totalSum)
-	CheckGears(lines) 
 }