Question

How to check if there is only one time zero in a string with TypeScript

Answer 1

function OnlyOneZero(str: string) {
    let count: number = 0;
    for (const ch of str.split('')) {
        if (ch == '0') {
                count++;
        }
  }
  return count == 1;
}
     
const s1: string = "294098";
console.log(OnlyOneZero(s1) ? "yes" : "no");
 
const s2: string = "47034099";
console.log(OnlyOneZero(s2) ? "yes" : "no");
 
 
 
 
 
/*
run:
 
"yes"
"no"
 
*/

 

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