add sol

leetcode/1700.NumberofStudentsUnabletoEatLunch/sol.go

@@ -0,0 +1,28 @@
+// https://leetcode.com/problems/number-of-students-unable-to-eat-lunch
+
+package main
+
+import (
+	"fmt"
+)
+
+func countStudents(students []int, sandwiches []int) int {
+	cnt := [2]int{}
+	for _, v := range students {
+		cnt[v]++
+	}
+	for _, v := range sandwiches {
+		if cnt[v] == 0 {
+			return cnt[v^1]
+		}
+		cnt[v]--
+	}
+	return 0
+}
+
+func main() {
+	students := []int{1, 1, 0, 0}
+	sandwiches := []int{0, 1, 0, 1}
+
+	fmt.Println(countStudents(students, sandwiches))
+}