Question

How to find highest frequency character in a string with JavaScript

Answer 1

function get_highest_frequency_character(s) { 
    const TOTLAASCII = 256; 
    let arr = new Array(TOTLAASCII).fill(0);
   
    const len = s.length; 
    for (let i = 0; i < len; i++) {
        arr[s[i].charCodeAt(0)]++; 
    }
         
    let max = arr[0]; 
    let ch = ' '; 
    for (let i = 1; i < len; i++) { 
        if (max < arr[s[i].charCodeAt(0)]) { 
            max = arr[s[i].charCodeAt(0)]; 
            ch = s[i]; 
        } 
    } 
         
    return ch; 
} 
       
const s = "javascriptc++phpcpythonc#"; 
           
console.log("Highest frequency character: " + get_highest_frequency_character(s)); 
  
  
  
     
     
/*
run:
     
"Highest frequency character: c"
     
*/

 

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