Question

How to implement the function indexOfAny() in TypeScript

Answer 1

function indexOfAny(str: string, array: any[]) {
    let lowestIndex: number = -1;
 
    for (let i in array) {
        let index: number = str.indexOf(array[i]);
 
        if (index > -1) {
            if (lowestIndex == -1 || index < lowestIndex) {
                lowestIndex = index;
                if (index == 0) {
                    break;
                }
            }
        }
    }
  
    return lowestIndex;
}
 
const str: string = "typescript programming";
          
const i: number = indexOfAny(str, ['u', 'x', 'o']);
          
console.log(i);
 
 
 
 
 
/*
run:
  
13
  
*/

 

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