Question

How to find the starting and ending position of a given value in an integer array in TypeScript

Answer 1

function findStartingEndingPosition(arr: number[], value: number) {
    let result: number[] = Array(2).fill(-1);
   
    for (let i: number = 0; i < arr.length; i++) {
        if (arr[i] !== value) {
            continue;
        }
   
        if (result[0] === -1) {
            result[0] = i;
        }
           
        result[1] = i;
    }
   
    return result;
}
           
const arr: number[] = [1, 3, 4, 9, 7, 7, 8, 8, 8, 10, 11, 8, 8, 17];
const value: number = 8;
   
const result: number[] = findStartingEndingPosition(arr, value);
   
console.log("start: " + result[0]);
console.log("end: " + result[1]);
   
   
   
/*
run:
   
"start: 6" 
"end: 12" 
   
*/

 

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