[Question] : Given an array of integers nums and an integer target, find indices of the two numbers which addition equals to target.Example: Input: nums = [2,7,11,15], target = 13 Output: [0,2] Explanation: Because nums[0] + nums[2] == 13, we return [0, 2]. Approach #1 : Using Two pointers: – Step 1: First sort array thenStep 2: If arr[left] […]
Question : Given an m*n 2D sorted matrix of integers, write a program to find if the given integer exists in the matrix.The matrix has the properties below: Approach #1 By removing row and col in each comparisons . Starting from the top right of matrix, move towards the bottom left in search of the
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Question: Find the missing number in first n Natural numbers…
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Here are the steps to convert decimal number into binary : – Convert 410 to binary: Divide by 2 Quotient Remainder Bit / count 4/2 2 0 0 2/2 1 0 1 1/2 0 1 2 So 410 = 1002 You can try out self Here are list of some binary numbers – Decimal Binary 0 0
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[Question]: In a given random array find a number which appears only single time Example : Random array input – [9,2,2,3,4,4,3] output = 9Solution: Step 1: Create a dictionary. Step 2: Create loop and fill the keys with element occurrence.Step 3: Create a loop and return the dictionary element which has only single occurrence .T
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Xcode 14 onwardsSimulator ► Accessibility ► Display & Text Size ► Larger Text ► Select Font. Simulator ► Accessibility ► Display & Text Size ► Larger Text ► Select Font. If you wish to chose font for SwiftUI Preview Select device setting from bottom preview tab.You can see live font changes from SwiftUI code.
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[Question] In a. Given a binary array nums and an integer k, find the maximum number of consecutive 1‘s in the array & you can flip at most k 0‘s.Example: – var arrMix = [1, 0, 0, 1, 1, 0, 1, 0, 1, 1, 1] var arrCount = 11 var maxZeros = 2Hence the output will be 8 i.e 1, 1,
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[Question] In given two sorted arrays find intersection.// Ex–> A: [1 2 3 3 4 5 6] , B: [3 3 5] Output: 3,3,5#Approach: // TC O(n) // SC O(1)
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[Question]: In a given two sorted array find union elements. Output should be sorted. For example : arr1[] = {1,2,3,4,5} arr2[] = {2,3,4,4,5} Output: {1,2,3,4,5}Approach #1: Use Dictionary / Hashset & after it sort the array which SC: O(m+n) TC: O( (m+n)log(m+n) ) Approach #2: Two pointer approach: use two pointer i & j & fill the
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Logic: Create a pivot element & arrange elements with two partitions, If the elements are lesser than pivot add it to left partition & if elements bigger than the pivot arrange it to right side of partition & make call recursively with the subarray found with same approach. Time Complexity: Avg O(n^2) .. Best: O(n
