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master
Author | SHA1 | Date | |
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f7ffa91c11 | |||
2c9ce86b76 | |||
8b200c099f | |||
063a229f3a | |||
38deb15d4d | |||
e260cf38dc |
10
src/bsrch.c
10
src/bsrch.c
@@ -11,18 +11,18 @@
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#include <stddef.h>
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#include <stddef.h>
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int bsrch(int target, int* arr, size_t n)
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int bsrch(int target, int* arr, int n)
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{
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{
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// TODO: Find a way to error if list is out of order
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// TODO: Find a way to error if list is out of order
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bool found = false;
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int start = 0, end = n - 1;
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int start = 0, end = n - 1;
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if (arr[start] > target || arr[end] < target) return -1;
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if (arr[start] > target || arr[end] < target) return -1;
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int mid = (start + end) / 2;
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int mid = (start + end) / 2;
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while (!found)
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while (true)
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{
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{
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if (arr[mid] == target) found = true;
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if (arr[mid] == target) break;
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if (start == end && !found) return -1;
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if (start == end) return -1;
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if (mid == end) return -1;
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else if (arr[mid] < target)
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else if (arr[mid] < target)
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{
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{
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start = mid + 1;
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start = mid + 1;
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@@ -9,4 +9,4 @@
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#include <stddef.h>
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#include <stddef.h>
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int bsrch(int target, int* arr, size_t n);
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int bsrch(int target, int* arr, int n);
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@@ -10,7 +10,7 @@
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#include <stdbool.h>
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#include <stdbool.h>
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void bubblesort(int* arr, size_t n)
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void bubblesort(int* arr, int n)
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{
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{
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bool swapped = true;
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bool swapped = true;
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@@ -9,4 +9,4 @@
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#include <stddef.h>
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#include <stddef.h>
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void bubblesort(int* arr, size_t n);
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void bubblesort(int* arr, int n);
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@@ -7,15 +7,17 @@
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#include "bubble.h"
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#include "bubble.h"
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#include "bsrch.h"
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#include "bsrch.h"
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#include "lsrch.h"
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#include "ccolour/colour.h"
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#include "ccolour/colour.h"
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#include <ctype.h>
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#include <ctype.h>
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#include <stdbool.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdlib.h>
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#include <string.h>
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inline void quit_err(const char* msg)
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static inline void quit_err(const char* msg)
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{
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{
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ChangeColour(msg, RED_FOREGROUND, DEFAULT_COLOR, true);
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ChangeColour(msg, RED_FOREGROUND, DEFAULT_COLOR, true);
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exit(EXIT_FAILURE);
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exit(EXIT_FAILURE);
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@@ -51,20 +53,29 @@ int main(int argc, char** argv)
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}
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}
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int n = argc - 1;
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int n = argc - 1;
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/*
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* The line:
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* buffer[strcspn(buffer, "\n")] = 0;
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* Strips trailing newline, so "2\n" becomes "2"
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*/
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char choice_str[16];
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char choice_str[16];
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printf(
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printf(
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"1. Binary search\n"
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"1. Binary search\n"
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"2. Bubble sort\n"
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"2. Bubble sort\n"
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"3. Liniar search\n"
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"Please pick a mode of operation: "
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"Please pick a mode of operation: "
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);
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);
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scanf("%s", choice_str);
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fgets(choice_str, 16, stdin);
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choice_str[strcspn(choice_str, "\n")] = 0;
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// TODO: Add checking that number is in range
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// TODO: Add checking that number is in range
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while (!isint(choice_str))
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while (!isint(choice_str))
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{
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{
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printf("Sorry but you must enter a number between 1 and 2\n");
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printf("Sorry but you must enter a number between 1 and 3\n");
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printf("Try again: ");
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printf("Try again: ");
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scanf("%s", choice_str);
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fgets(choice_str, 16, stdin);
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choice_str[strcspn(choice_str, "\n")] = 0;
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}
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}
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int choice = atoi(choice_str);
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int choice = atoi(choice_str);
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@@ -72,11 +83,12 @@ int main(int argc, char** argv)
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{
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{
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char target_str[16];
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char target_str[16];
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printf("Enter number to search for: ");
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printf("Enter number to search for: ");
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scanf("%s", target_str);
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fgets(target_str, 16, stdin);
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target_str[strcspn(target_str, "\n")] = 0;
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while (!isint(target_str))
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while (!isint(target_str))
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{
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{
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printf("Sorry but you must enter a whole number, try again: ");
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printf("Sorry but you must enter a whole number, try again: ");
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scanf("%s", target_str);
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fgets(target_str, 16, stdin);
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}
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}
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int target = atoi(target_str);
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int target = atoi(target_str);
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@@ -98,7 +110,26 @@ int main(int argc, char** argv)
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}
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}
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putchar('\n');
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putchar('\n');
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}
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}
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else if (choice == 3)
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{
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char target_str[16];
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printf("Enter number to search for: ");
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fgets(target_str, 16, stdin);
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target_str[strcspn(target_str, "\n")] = 0;
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while (!isint(target_str))
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{
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printf("Sorry but you must enter a whole number, try again: ");
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fgets(target_str, 16, stdin);
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}
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int target = atoi(target_str);
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int result = lsrch(arr, n, target);
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if (result == -1)
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puts("Value not found");
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else
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printf("Value found at index: %d\n", result);
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}
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free(arr);
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free(arr);
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return 0;
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return 0;
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}
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}
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16
src/lsrch.c
Normal file
16
src/lsrch.c
Normal file
@@ -0,0 +1,16 @@
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/*
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* Filename: lsrch.c
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* Author(s): Roland (r.weirhowell@gmail.com)
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* Description: Perform linear search on an integer array
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* License: MIT (https://spdx.org/licenses/MIT.html)
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*/
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#include "lsrch.h"
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int lsrch(int* arr, int n, int target)
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{
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for (int i = 0; i < n; i++)
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if (arr[i] == target) return i;
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return -1;
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}
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11
src/lsrch.h
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11
src/lsrch.h
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@@ -0,0 +1,11 @@
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/*
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* Filename: lsrch.h
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* Author(s): Roland (r.weirhowell@gmail.com)
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* Description: Header file for lsrch.c
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* License: MIT (https://spdx.org/licenses/MIT.html)
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*/
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#pragma once
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int lsrch(int* arr, int n, int target);
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