Create: 1189-maximum-number-of-balloons.rs

rust/1189-maximum-number-of-balloons.rs

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+use std::collections::HashMap;
+
+impl Solution {
+ pub fn max_number_of_balloons(text: String) -> i32 {
+ let mut count_text = HashMap::new();
+ let mut balloon = HashMap::new();
+ let mut result = text.len();
+
+ for ch in text.chars() {
+ *count_text.entry(ch).or_insert(0) += 1;
+ }
+
+ for ch in "balloon".chars() {
+ *balloon.entry(ch).or_insert(0) += 1;
+ }
+
+ for ch in balloon.keys() {
+ result = result.min(count_text.get(ch).unwrap_or(&0) / balloon.get(ch).unwrap());
+ }
+
+ result as i32
+ }
+}