How do you find the max and min of an array?

How do you find the max and min of an array?

Getting the maximum element of an array

1. var arr = [1,2,3]; var max = arr. reduce(function(a, b) { return Math. max(a, b); }, -Infinity); The following function uses Function.
2. function getMaxOfArray(numArray) { return Math. max. apply(null, numArray); }
3. var arr = [1, 2, 3]; var max = Math. max(… arr);

How do you find the max location of an array in Matlab?

You can use max() to get the max value. The max function can also return the index of the maximum value in the vector. To get this, assign the result of the call to max to a two element vector instead of just a single variable.

How do you find the minimum value in an array in Matlab?

M = min( A ) returns the minimum elements of an array.

1. If A is a vector, then min(A) returns the minimum of A .
2. If A is a matrix, then min(A) is a row vector containing the minimum value of each column of A .

How do you find the max and min of an array in Matlab?

M = max( A ,[], dim ) returns the maximum element along dimension dim . For example, if A is a matrix, then max(A,[],2) is a column vector containing the maximum value of each row.

How do you find the maximum peak value in Matlab?

Description. pks = findpeaks( data ) returns a vector with the local maxima (peaks) of the input signal vector, data . A local peak is a data sample that is either larger than its two neighboring samples or is equal to Inf . The peaks are output in order of occurrence.

How do you find the maximum value of an equation?

If you are given the formula y = ax2 + bx + c, then you can find the maximum value using the formula max = c – (b2 / 4a). If you have the equation y = a(x-h)2 + k and the a term is negative, then the maximum value is k.

How do you find the local max and min of a graph of a derivative?

the graph of its derivative f ‘(x) passes through the x axis (is equal to zero). If the function goes from increasing to decreasing, then that point is a local maximum. If the function goes from decreasing to increasing, then that point is a local minimum.

How many comparisons are required to find the maximum and minimum?

Lower bounds for the MIN and MAX Claim: Every comparison-based algorithm for finding both the minimum and the maximum of n elements requires at least (3n/2)-2 comparisons.

How do you find the maximum value of an array?

M = max (A) returns the maximum elements of an array. If A is a vector, then max (A) returns the maximum of A. If A is a matrix, then max (A) is a row vector containing the maximum value of each column.

What is min and max function in MATLAB?

6 Answers. The “min” and “max” functions in MATLAB return the index of the minimum and maximum values, respectively, as an optional second output argument. For example, the following code produces a row vector ‘M’ that contains the maximum value of each column of ‘A’, which is 3 for the first column and 4 for the second column.

How do I find the Max and Min of a matrix?

For more information on the ‘min’ and ‘max’ functions, see the documentation pages listed below: To find the indices of all the locations where the maximum value (of the whole matrix) appears, you can use the “find” function. maximum = max(max(A));

How to get the maximum value of a column in MATLAB?

Accepted Answer. The “min” and “max” functions in MATLAB return the index of the minimum and maximum values, respectively, as an optional second output argument. For example, the following code produces a row vector ‘M’ that contains the maximum value of each column of ‘A’, which is 3 for the first column and 4 for the second column.