How to find the largest and smallest number in an unsorted integer array

If the array is unsorted, you must read every value in the array and use a variable for the min and max value found. Here is an example in C/C++.

// Include for printf function

#include

int main()

{

// Declare variables and a random sequence of 10 integers

// greater than zero

int maxValue = -2147483647; // initialize to smallest possible value

int minValue = 2147483647; // initialize to largest possible value

// sequence is an array to hold the ten numbers

int sequence[14] = { -10, 3, 7, 9, 20, 6, 4, 1, 8, 10, -30, 62, 5, 2 };

// Look at every value in the sequence and compare it

// to the min and max values

for (int index = 0; index < 14; ++index) {

// If the number in the sequence at this location

if (maxValue < sequence[index]) {

maxValue = sequence[index]; // save the new largest value

}

if (minValue > sequence[index]) {

minValue = sequence[index]; // save the new smallest value

}

}

printf("The Maximum Value = %d and the Smallest Value = %d\n", maxValue, minValue);

return 0;

}