add sol

leetcode/daily/2185/sol.go

@@ -0,0 +1,31 @@
+// https://leetcode.com/problems/counting-words-with-a-given-prefix/description/
+
+package main
+
+import "fmt"
+
+func prefixCount(words []string, pref string) int {
+	count := 0
+	for i := 0; i < len(words); i++ {
+		if isPrefix(pref, words[i]) {
+			count++
+		}
+	}
+
+	return count
+}
+
+func isPrefix(prefix, word string) bool {
+	n := len(prefix)
+	m := len(word)
+
+	prefixMatch := m >= n && word[:n] == prefix
+
+	return prefixMatch
+}
+
+func main() {
+	words := []string{"pay", "attention", "practice", "attend"}
+	prefix := "at"
+	fmt.Println(prefixCount(words, prefix))
+}