feat(angch/2024-07): use int instead of str

angch · angch · commit 710feb4ff8ba · 2024-12-07T20:59:58.000+08:00
diff --git a/angch/2024-07/main.go b/angch/2024-07/main.go
@@ -40,9 +40,10 @@ func day7(file string) (part1, part2 int) {
 					start *= n[i]
 				} else {
 					ispart2 = true
-					vv := fmt.Sprintf("%d%d", start, n[i])
-					v, _ := strconv.Atoi(vv)
-					start = v
+					for range len(rs[i]) {
+						start *= 10
+					}
+					start += n[i]
 				}
 			}
 			if start == testv {

Original file line number	Diff line number	Diff line change
`@@ -40,9 +40,10 @@ func day7(file string) (part1, part2 int) {`
`40`	`40`	`start *= n[i]`
`41`	`41`	`} else {`
`42`	`42`	`ispart2 = true`
`43`		`- vv := fmt.Sprintf("%d%d", start, n[i])`
`44`		`- v, _ := strconv.Atoi(vv)`
`45`		`- start = v`
	`43`	`+ for range len(rs[i]) {`
	`44`	`+ start *= 10`
	`45`	`+ }`
	`46`	`+ start += n[i]`
`46`	`47`	`}`
`47`	`48`	`}`
`48`	`49`	`if start == testv {`