Equilibrium

equilibrium.js

function equi ( A ) {
    var N = A.length;
    
    for(var val in A){
        if(check(val, A))
            return val;
    }
    
    return false
}

function check(index, array){
    var fsum = 0;
    var lsum = 0;
    
    for(var i = 0; i < index; ++i){
        fsum += array[i];
    }
    
    for(var i = index + 1; i <= array.length; ++i){
        lsum += array[i];
    }
    
    if(fsum === lsum)
        return true;
    else
        return false;
}