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PHASE 1 -

CodingBat (brushing up the basics to reinforce them)

Warmup 1

S.no Keywords
1 return statement //statement or true or false
2 math.abs //absolute value
3 return(a < 0 && b < 0); //returns true whenever its true
4 str.length(), str.substring(0,3).equals("not")//string
5 fix = str.substring(0,2) // firstTwo.equals("hi")//string
6 .charAt//character
7 return str.substring(0, 1) + str.substring(4);
8 str. substring(1,3).equals("ix"))/substring start at 1 and end just before 3
9 str.charAt(0)=='o')//difference between " and '
10 str.toUpperCase()//\ and String back = str.substring(cut); // this takes from cut to the end

Warmup 2

S.no Keywords
1 str.indexOf("x")
2 x.startsWith("xx")
3 return(a < 0 && b < 0); //returns true whenever its true
4 nums[i] == 9//to check if no in ith position in the array is equal to 9
5 int len = Math.min(a.length(), b.length())
6 i += 4 //increment by 4

NewKeywords Methods or Functions

Two Pointer Approach

str.isEmpty()

Character.isLetterOrDigit()

use of string builder

Math.pow(), Math.abs()

% /

overflow control statement

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