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histogram

Language/Type: C++ vector collections STL
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Write a function named histogram that accepts as a parameter a reference to a vector of integer scores in range 0-49 and prints a histogram of scores bucketed by tens. For example, if the vector scores contains {48, 20, 31, 49, 35, 45, 33, 26, 48, 32, 19}, the call of histogram(scores); should print the following console output: 

0's : {}
10's : {19}
20's : {20, 26}
30's : {31, 35, 33, 32}
40's : {48, 49, 45, 48}
Function: Write a C++ function as described, not a complete program.

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