Solution 215530

Submitted on 11 Mar 2013 by Adrian Dronca

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Adrian Dronca on 11 Mar 2013

so I did it in 1 single line but my size is too big :((

David Melton on 12 Jul 2013

Here's my one-liner (similar to yours):

tf = ~sum(x(2:end) - x(1:end-1) <= 0)

Chris Liu on 5 Nov 2020

you did good job

Test	Status	Code Input and Output
1	Pass	%% x = [0 1 2 3 4]; assert(isequal(mono_increase(x),true)); ans = 1
2	Pass	%% x = [0]; assert(isequal(mono_increase(x),true)); ans = 1
3	Pass	%% x = [0 0 0 0 0]; assert(isequal(mono_increase(x),false)); ans = 0
4	Pass	%% x = [0 1 2 3 -4]; assert(isequal(mono_increase(x),false)); ans = 0
5	Pass	%% x = [-3 -4 2 3 4]; assert(isequal(mono_increase(x),false)); ans = 0
6	Pass	%% x = 1:.1:10; assert(isequal(mono_increase(x),true)); ans = 1
7	Pass	%% x = cumsum(rand(1,100)); x(5) = -1; assert(isequal(mono_increase(x),false)); ans = 0
8	Pass	%% x = cumsum(rand(1,50)); assert(isequal(mono_increase(x),true)); ans = 1

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Problem 10. Determine whether a vector is monotonically increasing