1- write a java program to print the total arrangement of any string without using collection and string.
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forgot, some easy, medium leetcode.
how to find the closest 2 number in an array of unique positive number
You have five bottles with pills. One bottle has 9 gram pills, the others have 10 gram pills. You have a scale that can only be used once. How can you find out which bottle contains the 9 gram pills?
Output a single linked list in reverse, in linear time and constant space, and recursively
How to implement Sqrt(double k) efficiently?
Given n+1 buckets with n of them with ball inside and move(a,b) function, that moves ball from bucket a to bucket b. Each ball has a different number from [1,n] on it. Move balls, so each bucket has a ball with matching number in it.
giving lots of intervals [ai, bi], find a point intersect with the most number of intervals.
Given 2 arrays sorted in ascending orders (a[n] and b[n*2]) with the second half of array a[] being empty, create a function that merges both arrays into a single sorted array.
1. implement sqrt() with integer. 2. sort 3 color in array.
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