Function build_cumulative_symbol_frequency

pub fn build_cumulative_symbol_frequency(
    normalized_counter: &[usize],
) -> Vec<usize>

Build cs = f0 + f1 + … + fs-1

normalized_counter

Table that counts the number of symbols and normalized as well as the sum of frequency is 2^R. Where R is named table_log in that code.

normalized_counter[symbol_index] = symbol frequency normalized_counter.len() = number of symbols