Cody

Problem 1991. Find the index of nth maximum of a row vector of real numbers

Solution 1979196

Submitted on 16 Oct 2019
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Test Suite

Test Status Code Input and Output
1   Fail
x = [2 4.5 3 1 3.33]; n = 4; y_correct = 1; assert(isequal(findMaxIndex(x,n),y_correct))

x = 4.5000 3.3300 3.0000 2.0000 1.0000 idx = 2

Assertion failed.

2   Fail
x = [2 4.5 3 1 3.33]; n = 5; y_correct = 4; assert(isequal(findMaxIndex(x,n),y_correct))

x = 4.5000 3.3300 3.0000 2.0000 1.0000 idx = 1

Assertion failed.

3   Fail
x = [2 4.5 3 1 3.33 eps inf 0.01]; n = 1; y_correct = 7; assert(isequal(findMaxIndex(x,n),y_correct))

x = Inf 4.5000 3.3300 3.0000 2.0000 1.0000 0.0100 0.0000 idx = Inf

Assertion failed.

4   Fail
x = [2 4.5 3 1 3.33 eps inf 0.01]; n = 8; y_correct = 6; assert(isequal(findMaxIndex(x,n),y_correct))

x = Inf 4.5000 3.3300 3.0000 2.0000 1.0000 0.0100 0.0000 idx = 2.2204e-16

Assertion failed.

5   Fail
x = [2 4.5 3 1 3.33 eps inf 0.01 realmax realmin]; n = 2; y_correct = 9; assert(isequal(findMaxIndex(x,n),y_correct))

x = 1.0e+308 * Inf 1.7977 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 idx = 1.7977e+308

Assertion failed.

6   Fail
x = [-2.23 1 0 -6.65 2.63 -realmax inf 0]; n = 8 y_correct = 6; assert(isequal(findMaxIndex(x,n),y_correct))

n = 8 x = 1.0e+308 * Inf 0.0000 0.0000 0 0 -0.0000 -0.0000 -1.7977 idx = -1.7977e+308

Assertion failed.

7   Fail
x = [2 4.5 3.33 3 1 3.33]; n = 2; y_correct = [3 6]; assert(isequal(findMaxIndex(x,n),y_correct))

x = 4.5000 3.3300 3.3300 3.0000 2.0000 1.0000 idx = 3.3300

Assertion failed.

8   Fail
x = [2 4.5 pi eps eps pi 0 pi 6]; n = 3; y_correct = [3 6 8]; assert(isequal(findMaxIndex(x,n),y_correct))

x = 6.0000 4.5000 3.1416 3.1416 3.1416 2.0000 0.0000 0.0000 0 idx = 3.1416

Assertion failed.