To create a MultiIndex, use the pandas.MultiIndex.from_arrays() method. To set names of each of the index levels, use the names parameter.At first, import the required libraries −import pandas as pdMultiIndex is a multi-level, or hierarchical, index object for pandas objects. Create arrays −arrays = [[1, 2, 3, 4, 5], ['John', 'Tim', 'Jacob', 'Chris', 'Keiron']] The "names" parameter sets the names for each of the index levels. The from_arrays() is used to create a Multiindex −multiIndex = pd.MultiIndex.from_arrays(arrays, names=('ranks', 'student'))Display the Multiindex −print("The Multi-index...", multiIndex) Get the names of levels in Multiindex −print("The names of levels in Multi-index...", multiIndex.names)ExampleFollowing is the ... Read More

To return an ndarray of tuples of the form left, right, use the to_tuples() method in Pandas. At first, import the required libraries −import pandas as pdCreate IntervalArray −index = pd.arrays.IntervalArray.from_breaks(range(5)) Display the interval −print("IntervalIndex...", index)Return the ndarray of Tuples −print("The ndarray of Tuples...", index.to_tuples()) ExampleFollowing is the code −import pandas as pd # Create IntervalArray index = pd.arrays.IntervalArray.from_breaks(range(5)) # Display the interval print("IntervalIndex...", index) # Display the interval length print("IntervalIndex length...", index.length) # Return the ndarray of Tuples print("The ndarray of Tuples...", index.to_tuples())OutputThis will produce the following output −IntervalIndex... [(0, 1], (1, 2], (2, ... Read More

To check Intervals that only have an open endpoint in common overlap or not, use the overlaps() method.At first, import the required libraries −import pandas as pdTwo intervals overlap if they share a common point, including closed endpoints. Create an IntervalArray −intervals = pd.arrays.IntervalArray.from_tuples([(10, 20), (20, 35)]) Display the IntervalArray −print("IntervalArray...", intervals)Check Intervals that only have an open endpoint in common overlap or not. We have set closed on the right-side with the "right" value of the "closed" parameter −print("Does interval that that only have an open endpoint overlap or not...", intervals.overlaps(pd.Interval(20, 25, closed='right')))ExampleFollowing is the code −import pandas as ... Read More

To check Intervals that share closed endpoints overlap or not, use the IntervalArray.overlaps() method in Pandas.At first, import the required libraries −import pandas as pdTwo intervals overlap if they share a common point, including closed endpoints. Create an IntervalArrayintervals = pd.arrays.IntervalArray.from_tuples([(10, 20), (15, 35)]) Display the IntervalArray −print("IntervalArray...", intervals)Check Intervals that share closed endpoints overlap or not. We have set closed on the left-side with the "left" value of the "closed" parameter −print("Does interval that share closed endpoints overlap or not...", intervals.overlaps(pd.Interval(15, 28, closed='left')))ExampleFollowing is the code −import pandas as pd # Two intervals overlap if they share a ... Read More

To check elementwise if an Interval overlaps the values in the IntervalArray, use the overlaps() method in Pandas.At first, import the required libraries −import pandas as pdTwo intervals overlap if they share a common point, including closed endpoints. Intervals that only have an open endpoint in common do not overlap. Create an IntervalArray −intervals = pd.arrays.IntervalArray.from_tuples([(10, 20), (15, 35)]) Display the IntervalArray −print("IntervalArray...", intervals)Check elementwise if an Interval overlaps the values in the IntervalArray −print("Does interval overlaps values in the IntervalArray...", intervals.overlaps(pd.Interval(12, 30)))ExampleFollowing is the code −import pandas as pd # Two intervals overlap if they share a common ... Read More

Suppose we have two lists called walks and target. At the beginning we are at position 0 in a one-dimensional line. Now |walks[i]| represents the number of steps have been walked. And when walk[i] is positive then indicates walked right, and negative for left. When we walk, we move one block, that is the next or previous integer position. We have to find the number of blocks that's been walked on at least target number of times.So, if the input is like walks = [3, -7, 2] target = 2, then the output will be 5, from the following figure, ... Read More

Suppose we have two binary matrices mat1 and mat2. Here 1 represents land and 0 represents water, if there is a group of 1(land) surrounded by water is called island. We have to find the number of islands that exist in both mat1 and mat2 at the exact same coordinates.So, if the input is like mat1 =101100100And mat2 =101100101then the output will be 2, because the overlapping islands are, 101100101so there are two overlapping islands.To solve this, we will follow these steps −r := row count of mat1c := column count of mat1last_row := r - 1last_col := c - ... Read More

Suppose we have a list of numbers called nums, they are sorted in ascending order, we also have another number target, we have to find the index where target should be inserted to keep nums sorted. If target already present in nums, then return the largest index where target can be inserted. We have to solve this without using library functions and solve it in O(log n) time.So, if the input is like nums = [1, 5, 6, 6, 8, 9] target = 6, then the output will be 4, because 6 is already there, so to insert it, the ... Read More

Suppose we have a lowercase string s whose length is even. We have to find the minimum number of characters that need to be updated such that one of the following three conditions is satisfied for all i, where 0 ≤ i < n/2 and j, n/2 ≤ j < n −s[i] > s[j]s[i] < s[j]s[i] == s[j]So, if the input is like s = "pppxxp", then the output will be 1 because if we change the last "p" to "x", then this can satisfy the condition s[i] < s[j]To solve this, we will follow these steps −n := size ... Read More

To round the DateTimeIndex with minute frequency, use the DateTimeIndex.round() method. For minute frequency, use the freq parameter with value ‘T’.At first, import the required libraries −import pandas as pdDatetimeIndex with period 5 and frequency as s i.e. seconds. The timezone is Australia/Adelaide −datetimeindex = pd.date_range('2021-09-29 07:00', periods=5, tz='Australia/Adelaide', freq='45s') Display DateTimeIndex −print("DateTimeIndex...", datetimeindex)Round operation on DateTimeIndex date with minute frequency. For minute frequency, we have used 'T −print("Performing round operation with minute frequency...", datetimeindex.round(freq='T'))ExampleFollowing is the code −import pandas as pd # DatetimeIndex with period 5 and frequency as s i.e. seconds # timezone is Australia/Adelaide datetimeindex = pd.date_range('2021-09-29 ... Read More