Redistribute characters to make all strings equal

Hash Table String Counting

66.8% acceptance

Feb 25, 2026

1162

Given an array of strings words, in one operation you can move any character from words[i] to words[j]. Return true if you can make every string equal using any number of operations.

Solution

Rust

Time O(n²)

Space O(1)

LeetCode

solution.rs

impl Solution {
  pub fn make_equal(words: Vec<String>) -> bool {
    let n = words.len();
    let mut freq = [0usize; 26];
    for w in &words {
      for b in w.bytes() {
        freq[(b - b'a') as usize] += 1;
      }
    }
    freq.iter().all(|&c| c % n == 0)
  }
}