init

25/06/1432.go

@@ -0,0 +1,38 @@
+package main
+
+import (
+	"strconv"
+	"strings"
+)
+
+func maxDiff(num int) int {
+	replace := func(s string, x, y rune) string {
+		return strings.ReplaceAll(s, string(x), string(y))
+	}
+
+	num_max := strconv.Itoa(num)
+	num_min := num_max
+
+	for _, c := range num_max {
+		if c != '9' {
+			num_max = replace(num_max, c, '9')
+			break
+		}
+	}
+
+	for i, c := range num_min {
+		if i == 0 && c != '1' {
+			num_min = replace(num_min, c, '1')
+			break
+		}
+		if c != '0' && c != rune(num_min[0]) {
+			num_min = replace(num_min, c, '0')
+			break
+		}
+	}
+
+	x, _ := strconv.Atoi(num_max)
+	y, _ := strconv.Atoi(num_min)
+
+	return x - y
+}