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Java Arrays
Quiz by Courtney Yatteau
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41 questions
Q.-type of data structure constructed in memory.
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Q.See image
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Q.- primitive data types such as ints and doubles.
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Q.See image
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Q.No.
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Q.See image
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Q.- the square brackets [ ].
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Q.datatype [ ] arrayName;
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Q.See image
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Q.int [ ] myIntArray = new int [10];
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Q.No.
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Q.See image
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Q.arrayName [index number]
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Q.The number of elements - 1.
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Q.9.
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Q.Element #0
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Q.String[ ] surNameArray = new String [25];
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Q.-the word "Array" at the end of the variable name to indicate that this variable is an array.
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Q.myIntArray[0]= 5;
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Q.By enclosing the data values inside curly braces.
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Q.String [ ] monthsArray = {"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct", "Nov","Dec"};
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Q.Java will automatically assign a default value to each element.
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Q.A for loop.
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Q.length.
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Q.See image
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Q.See image
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Q.Using <= will send you out of bounds.
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Q.Starting the count at 1 would skip the first element in the array.
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Q.See image
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Q.See image
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Q.Math.random( )
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Q.0.0000 up to 0.999999999999999.
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Q.See image
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Q.int randomInt = (int)(Math.random( ) * 10);
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Q.See image
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Q.After multiplying by 10, add 1 to the result, then cast to an int.
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Q.(int)(Math.random() * (highValue - lowValue + 1) + lowValue);
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Q.(int)(Math.random() * (15 - 5 + 1) + 5);
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Q.See image
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Q.See image
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