fix compiler errors

Author: lennylxx

Makefile

@@ -1,6 +1,6 @@
 CC = gcc
 CXX = g++
-CFLAGS = -std=c99 -Wall
+CFLAGS = -std=c99 -Wall -lm
 CXXFLAGS = -std=c++11 -Wall
 
 C_SRCS = $(wildcard src/*.c)

src/146.c

@@ -34,7 +34,7 @@ int hash(int key) {
     return index > 0 ? index : (-index);
 }
 
-struct node_t* findAndAdjust(key) {
+struct node_t* findAndAdjust(int key) {
     int index = hash(key);
     struct node_t *p = m_lru.hash_table[index];
     while (p) {

src/162.c

@@ -24,8 +24,8 @@ int findPeakElement(int* nums, int numsSize) {
 
 int main() {
     int nums0[] = { 1, 2, 3, 1 };
-    int nums0[] = { 1, 2 };
-    assert(findPeakElement(sizeof(nums0) / sizeof(nums0[0])) == 2);
-    assert(findPeakElement(sizeof(nums1) / sizeof(nums1[0])) == 1);
+    int nums1[] = { 1, 2 };
+    assert(findPeakElement(nums0, sizeof(nums0) / sizeof(nums0[0])) == 2);
+    assert(findPeakElement(nums1, sizeof(nums1) / sizeof(nums1[0])) == 1);
     return 0;
 }

src/213.c

@@ -1,5 +1,6 @@
 #include <stdio.h>
 #include <stdlib.h>
+#include <assert.h>
 
 #define max(a,b) ((a)>(b)?(a):(b))
 int robNoCircle(int num[], int n) {

src/264.c

@@ -9,7 +9,6 @@ int nthUglyNumber(int n) {
     int k = 1; /* store index */
 
     while (k < n) {
-        int *index = NULL;
         int min = 0;
         if (nums[i2] * 2 <= nums[i3] * 3) {
             min = nums[i2] * 2;
@@ -39,7 +38,7 @@ int main() {
 
     int n = 10;
     int i;
-    for (i = 1; i <= 10; i++) {
+    for (i = 1; i <= n; i++) {
         printf("%d ", nthUglyNumber(i));
     }
     printf("\n");

src/41.c

@@ -3,7 +3,6 @@
 
 int firstMissingPositive(int* nums, int numsSize) {
     int i;
-    int flag = 0;
     for (i = 0; i < numsSize; i++) {
         while (nums[i] > 0 && nums[i] < numsSize && nums[nums[i] - 1] != nums[i]) {
             int t = nums[i];

src/49.cpp

@@ -1,6 +1,7 @@
 #include <iostream>
 #include <vector>
 #include <string>
+#include <algorithm>
 #include <unordered_map>
 
 using namespace std;