Check If String Is a Prefix of Array

// Accepted solution for LeetCode #1961: Check If String Is a Prefix of Array
class Solution {
    public boolean isPrefixString(String s, String[] words) {
        StringBuilder t = new StringBuilder();
        for (var w : words) {
            t.append(w);
            if (t.length() > s.length()) {
                return false;
            }
            if (t.length() == s.length()) {
                return s.equals(t.toString());
            }
        }
        return false;
    }
}

// Accepted solution for LeetCode #1961: Check If String Is a Prefix of Array
func isPrefixString(s string, words []string) bool {
	t := strings.Builder{}
	for _, w := range words {
		t.WriteString(w)
		if t.Len() > len(s) {
			return false
		}
		if t.Len() == len(s) {
			return t.String() == s
		}
	}
	return false
}

# Accepted solution for LeetCode #1961: Check If String Is a Prefix of Array
class Solution:
    def isPrefixString(self, s: str, words: List[str]) -> bool:
        n, m = len(s), 0
        for i, w in enumerate(words):
            m += len(w)
            if m == n:
                return "".join(words[: i + 1]) == s
        return False

// Accepted solution for LeetCode #1961: Check If String Is a Prefix of Array
struct Solution;

impl Solution {
    fn is_prefix_string(s: String, words: Vec<String>) -> bool {
        let mut t = "".to_string();
        for w in words {
            t.push_str(&w);
            if t == s {
                return true;
            }
        }
        false
    }
}

#[test]
fn test() {
    let s = "iloveleetcode".to_string();
    let words = vec_string!["i", "love", "leetcode", "apples"];
    let res = true;
    assert_eq!(Solution::is_prefix_string(s, words), res);
    let s = "iloveleetcode".to_string();
    let words = vec_string!["apples", "i", "love", "leetcode"];
    let res = false;
    assert_eq!(Solution::is_prefix_string(s, words), res);
}

// Accepted solution for LeetCode #1961: Check If String Is a Prefix of Array
function isPrefixString(s: string, words: string[]): boolean {
    const t: string[] = [];
    const n = s.length;
    let m = 0;
    for (const w of words) {
        m += w.length;
        if (m > n) {
            return false;
        }
        t.push(w);
        if (m === n) {
            return s === t.join('');
        }
    }
    return false;
}