ADVANCED DATA STRUCTURES PROGRAM • LEVEL 13 — ADVANCED SEARCHING

Find the First Value Greater Than a Target

Learn how to find the first value greater than a target using a clear C program.

IntermediateBinary searchSearch boundaries

PROBLEM UNDERSTANDING

Input and expected output

Sample input

No input required

Sample output

Upper bound index = 4

COMPLETE C PROGRAM

Complete C implementation

#include <stdio.h>

int main(void)
{
    int values[] = {1, 2, 2, 2, 4, 7}, target = 2, low = 0, high = 6;
    while (low < high) { int middle = low + (high - low) / 2; if (values[middle] <= target) low = middle + 1; else high = middle; }
    printf("Upper bound index = %d\n", low); return 0;
}

CURRENT STEP

Select Start to walk through the important lines.

SELECTED LINE

No line selected

EXPECTED OUTPUT FOR THE SAMPLE

Upper bound index = 4

0%Step 0 of 0

PROGRAM EXPLANATION

Algorithm and explanation

Read the required input values.
Move past every value equal to the target and preserve the first strictly greater position.
Display the computed result.

Move past every value equal to the target and preserve the first strictly greater position.

EFFICIENCY

Time and space complexity

Time complexity

O(log n)

Auxiliary space

O(1)

DEBUGGING CHECKLIST

Common mistakes

Check this

Use the correct format specifier for every variable.

Check this

Initialize variables before using their values.

Check this

Check braces, semicolons and input order carefully.

Try it yourself

Practice: Run the program with the sample input, predict its output, and then test one boundary case of your own.