DEV Community

Cover image for Find the index of the maximum item of an array
syedsimanta03
syedsimanta03

Posted on

Find the index of the maximum item of an array

Find the index of the maximum item of an array

const indexOfMax = arr => arr.reduce((prev, curr, i, a) => curr > a[prev] ? i : prev, 0);

// Examples
indexOfMax([1, 3, 9, 7, 5]); // 2
indexOfMax([1, 3, 7, 7, 5]); // 2

Top comments (0)