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C + + | c + + tutorial (four) program flow structure

4 program flow structure C++ supports the most basic three kinds of program operation structure: sequential structure selection structure loop structure 4.1 selection structure 4.1.1 if statement function: to execute a statement that meets the condition if statement can be nested superimposed single-line format if statement if(condition){condition meets the need to execute the statement; } if statement if(condition){condition satisfies the statement executed}else{condition does not meet the statement executed} if statement {code... } practice cases have three...

C + + | c + + tutorial (eight) structure

8 Structures 8.1 Basic concepts of structures Structures belong to user-defined data types, allowing users to store different data types. 8.2 Structure definition and use definition syntax: struct structureName{memberList}; Struct StructureName variableName; Struct StructureName variableName{member1, member2...... }; Struct StructureName{memberList}vari...

C + + | c + + tutorial (7) pointer

7 Pointer 7.1 The basic concept of pointer function: indirect access to memory through the pointer memory number is from 0, generally hexadecimal representation (the specific few bytes should be determined by the system) can use the pointer variable to store the address of the variable 7.2 pointer variable definition and use syntax: dataType * pointVariableName = & variableName& It's a take address symbol. You can use the dereferencing symbol * to access memory accessed by the pointer. *poi...

C + + | introductory tutorial (3) operator

3 operators role: the algorithm used to execute code 3.1 arithmetic operators: used to + / - * / addition, subtraction, multiplication, and division with addition, subtraction, multiplication, and division division, division by two integers, the result is still the integer, decimal part will be remove % modulus (also known as yu) : can be to take more than two integer + + increasing, decreasing: Increment (decrement) : The increment (decrement) operator precedes a variable by increasing or decrementing it. On the contrary, it will calculate first and then add...

C + + | c + + tutorial (6) function

A large program can be divided into many program blocks, and each module can be encapsulated as a function function. FunctionName (functionName) functionName(functionName) functionName(functionName) functionName(functionName) functionName(functionName) functionName(functionName) functionName(functionName) functionName(functionName) functionName(functionName) functionName(functionName) functionName(functionName) functionName(functionName) functionName(functionName) functionName(functionName) functionName(functionName) functionName

PAT_ Class A _1147 HEAPS

For the complete binary tree, an array can be used to store its hierarchical sequence, and then functions ismaxHeap and isminHeap are used to determine whether the complete binary tree is a large root Heap or a small root Heap respectively. If neither is the case, output NOT Heap, and then use PostTraverse to perform post-order traversal of the complete binary tree. The output node can be accessed when the node.

Before the buckle 347 】 【 OJ | force output K high frequency elements

Given an array of non-empty integers, return the elements with the highest frequency of k. The element is an integer, and the range of values is int. 1 ≤ k ≤ The number of different elements in the array, and the occurrence frequency of elements is different. Requirement: The time complexity of the algorithm is O(n log n), where n is the size of the array. Format of input data: integer array before semicolon and k after semicolon in input content. Example input: {code... } output: {code...

C + + | introductory tutorial (a) c + + first

1 c + + 1.1 in the first person that c + + program 1.2 annotations single-line comments: / / multiline comment: / * * / variable variables exist 1.3: It's easy for us to manage the memory space and each block of memory has a 16-bit address code but if we use the name of the variable, we can call the data directly without the address code. Variable creation method: {code... } 1.4 Constants are used to record data that cannot be modified. C++ defines constants in two ways...

C + + | c + + tutorial (2) basic data types

Although my system is 64-bit, I have tried to write a long with only 4 bytes, probably because of VS. This isn't particularly stable, so try not to use long after that.

Number of towers - classic example

I have told you, this is a DP topic, can you AC? Input data begins with an integer C, representing the number of test instances, and the first line of each test instance is an integer N(1 < = N < = 100), denotes the height of the tower, and then denotes the tower with N rows of numbers, where row I has I integers, and all integers are within the interval [0,99]. For each test instance, the Output is the maximum possible sum. For each test instance, the Output is...

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