Question

How to check if a string contains identical digits in TypeScript

Answer 1

function isStringContainIdenticalDigits(str: string) {
    const arr: string[] = [...str];
    const st = new Set<string>(arr);
 
    return st.size == 1;
}
 
let str: string = "3333333333";
console.log(isStringContainIdenticalDigits(str) ? "yes" : "no");
 
str = "7333333333";
console.log(isStringContainIdenticalDigits(str) ? "yes" : "no");
 
 
 
/*
run:
 
"yes" 
"no" 
 
*/

 

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