//The array stocks stores the behavior of stocks for one year.
//The numbers in the array represent percentages.

let stocks  = [ 5, 6, 3, 4, 5, 8, 5, 3, 2, 10, 9, 5]


//A peak is when the percentage on the left of a given month M is less and the 
//percentage on the right of month M is greater. For example, the list given above, contains 
//three peaks, they  are 6, 8, and 10 (positions 1, 5 and 9 respectively)
// Complete function getPeaks so that it returns an array containing all the locations
// of all peaks that a exists in the parameter array named list. 
// If there are no peaks, this function should return an empty array ([])
function getPeaks(list: number[]){
    let finishedarray: number[] = [];
    for (let i = 0; i < list.length-1; i++) {
        // console.log(`i is ${i}, arrindex is ${list[i]}, before, ${list[i-1]}, after ${list[i+1]}`)
        if (list[i]! > list[i - 1]! && list[i]! > list[i+1]!) {
            finishedarray.push(i);
        }
    }
    return finishedarray;
}

// for the array stocks shown above, getPeaks should return [1, 5, 9]
// WRITE CODE TO TEST YOUR FUNCTION HERE.

console.log(getPeaks(stocks))