Cannot understand the histogram problem

#1

How to find the single integer denoting area of the rectangle using array elements. Please explain with the example.

#2

do u want me to explain the qn?
or the soln approach with an e.g?

#3

Both the question and approach to solve the question

#4

the value in the array represents the heights of the bar with width 1 unit
so u have to find the max rect. area that exists inside that histogram

brute force:
for ( int i=0;i<n; ){
for(int j=i+1;j<n; ){
if
jth value is <= ith value i.e rect. can form
update the area and store the max area
else
break;
}
}

better approach exists for this qn
for soln pls see the video first
becoz it is very difficult to explain it

#5

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