add: leetcode 1816 solution

leetcode/1816.Truncate-Sentence/1816.Truncate Sentence.go

@@ -0,0 +1,18 @@
+package leetcode
+
+func truncateSentence(s string, k int) string {
+	end := 0
+	for i := range s {
+		if k > 0 && s[i] == ' ' {
+			k--
+		}
+		if k == 0 {
+			end = i
+			break
+		}
+	}
+	if end == 0 {
+		return s
+	}
+	return s[:end]
+}