Question

How to sum the numbers in string with TypeScript

Answer 1

function SumNumbers(str : string) {
    let sum = 0;
    let tmp = "";
    
    for (const ch of str.split('')) {
        if (ch >= '0' && ch <= '9') {
            tmp += ch;
        }
        else {
            if (tmp.length > 0) {
                sum += parseInt(tmp);
            }
            tmp = "";
        }
    }
        
    if (tmp.length > 0) {
        sum += parseInt(tmp);
    }
    
    return sum;
}
        
const str : string = "typescript4c++17c99java18";

console.log(SumNumbers(str));

  
  
  

/*
run:
  
138
  
*/
 
 

 

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