Arrays
Akopọ
Imagine storing the marks of 100 students in 100 separate variables, then trying to add them up. It would be unbearable. An array solves this by holding many values of the same type under a single name, each reachable by a number called its index, so a short loop can sweep through them all.
In this lesson you will learn to declare and use one-dimensional and two-dimensional arrays in the Cambridge pseudocode style, understand why arrays are so useful, and write values into and read values from an array using iteration, with full worked routines you can adapt in the exam.
Awọn Afojusun
- 1 Declare and use one-dimensional (1D) and two-dimensional (2D) arrays
- 2 Understand the use of arrays
- 3 Write values into, and read values from, an array using iteration
Akọ̀wé Ẹ̀kọ́
O wa lori ohun elo Green Bridge
Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
Ìdánwò Ẹ̀kọ́
Oriire fun ipari ẹkọ lori Arrays. Ni bayi ti o ti ṣawari naa awọn imọran bọtini ati awọn imọran, o to akoko lati fi imọ rẹ si idanwo. Ẹka yii nfunni ni ọpọlọpọ awọn adaṣe awọn ibeere ti a ṣe lati fun oye rẹ lokun ati ṣe iranlọwọ fun ọ lati ṣe iwọn oye ohun elo naa.
Iwọ yoo pade adalu awọn iru ibeere, pẹlu awọn ibeere olumulo pupọ, awọn ibeere idahun kukuru, ati awọn ibeere iwe kikọ. Gbogbo ibeere kọọkan ni a ṣe pẹlu iṣaro lati ṣe ayẹwo awọn ẹya oriṣiriṣi ti imọ rẹ ati awọn ogbon ironu pataki.
Lo ise abala yii gege bi anfaani lati mu oye re lori koko-ọrọ naa lagbara ati lati ṣe idanimọ eyikeyi agbegbe ti o le nilo afikun ikẹkọ. Maṣe jẹ ki awọn italaya eyikeyi ti o ba pade da ọ lójú; dipo, wo wọn gẹgẹ bi awọn anfaani fun idagbasoke ati ilọsiwaju.
- What must be true of all the items stored in one array? A. they must be integers B. they must be the same data type C. they must be strings D. they must be unique Answer: B
- What is used to identify the position of an element in an array? A. its value B. its data type C. its index D. its identifier Answer: C
- Which declaration creates a 1D array of 8 integers indexed 1 to 8? A. DECLARE A : INTEGER B. DECLARE A : ARRAY[1:8] OF INTEGER C. DECLARE A : ARRAY OF 8 D. DECLARE A[8] Answer: B
- Which loop structure is normally used to process every element of a 2D array? A. a single WHILE loop B. a REPEAT loop C. a nested (loop inside a loop) D. no loop is needed Answer: C
- Before adding all elements of an array into a variable Total, Total should first be: A. set to the first element B. set to 0 C. left undeclared D. set to the array length Answer: B
O wa lori ohun elo Green Bridge
Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
O wa lori ohun elo Green Bridge
Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
Awọn Iwe Itọsọna Ti a Gba Nimọran
Ṣe Adaṣe Awọn Ibeere Idanwo Adaṣe
Ṣe o fẹ ṣe adaṣe awọn ibeere idanwo adaṣe nipa Arrays? Ṣe igbasilẹ ohun elo Green Bridge CBT lati wọle si awọn ibeere idanwo adaṣe ati awọn ayẹwo adaṣe kikun fun koko-ọrọ yii.
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